37 Airworthiness Directives: 25 airplane, 8 rotorcraft, 2 engine, 1 appliance, 1 glider.
AD 2020-12-14 · published Aug 3, 2020, effective Sep 8, 2020
Bombardier, Inc., Airplanes
The FAA is adopting a new airworthiness directive (AD) for certain Bombardier, Inc., Model BD-700-1A10 and BD-700-1A11 airplanes. This AD was prompted by a report that the anti-fretting coating on the piston rods of certain ram air turbine (RAT) deployment actuators may have been incorrectly applied. This AD requires a review of airplane maintenance records or an inspection of the RAT deployment actuator to determine the serial number and, depending on the findings, replacement with an upgraded RAT deployment actuator. The FAA is issuing this AD to address the unsafe condition on these products.
AD 2020-12-16 · published Aug 3, 2020, effective Sep 8, 2020
Airbus SAS Airplanes
The FAA is adopting a new airworthiness directive (AD) for certain Airbus SAS Model A320-214, -216, -231, -232, -233, -251N, and - 271N airplanes. This AD was prompted by a report that following the installation of a second cargo fire extinguishing bottle, insufficient clearance between the cargo compartment fire extinguishing pipes was found. This AD requires inspection and modification of the cargo compartment fire extinguishing pipes, and on-condition actions if necessary, as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
AD 2020-16-01 · published Aug 4, 2020, effective Aug 19, 2020
Airbus SAS Airplanes
The FAA is adopting a new airworthiness directive (AD) for all Airbus SAS Model A318, A319, A320, and A321 series airplanes. This AD was prompted by reports of low halon concentration in the forward and aft cargo compartments due to air leakage through cargo door seals. This AD requires repetitive cleaning and greasing of affected cargo door seals, as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
AD 2020-16-02 · published Aug 5, 2020, effective Sep 9, 2020
Pilatus Aircraft Ltd. Airplanes
The FAA is adopting a new airworthiness directive (AD) for Pilatus Aircraft Ltd. Models PC-6, PC-6/350, PC-6/350-H1, PC-6/350-H2, PC-6/A, PC-6/A-H1, PC-6/A-H2, PC-6/B-H2, PC-6/B1-H2, PC-6/B2-H2, PC-6/ B2-H4, PC-6/C-H2, PC-6/C1-H2, PC-6-H1, and PC-6-H2 airplanes. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as rudder shaft assemblies with incorrect rivet configurations. The FAA is issuing this AD to address the unsafe condition on these products.
AD 2020-12-13 · published Aug 6, 2020, effective Sep 10, 2020
Bombardier, Inc., Airplanes
The FAA is adopting a new airworthiness directive (AD) for certain Bombardier, Inc., Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes. This AD was prompted by reports that during airplane wing fatigue testing, fatigue cracks were found on the lower right- hand-side wing plank at the end of the integrally machined stringers, which led to a determination that new or more restrictive airworthiness limitations are necessary. This AD requires, for certain airplanes, revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations. The FAA is issuing this AD to address the unsafe condition on these products.
AD 2020-13-01 · published Aug 10, 2020, effective Aug 17, 2020
Daher Aircraft Design, LLC (Type Certificate Previously Held by Quest Aircraft Design, LLC), Airplanes
The FAA is correcting an airworthiness directive (AD) that published in the Federal Register. The AD applies to all Daher Aircraft Design, LLC (type certificate previously held by Quest Aircraft Design, LLC), Model KODIAK 100 airplanes. As published, the type certificate (TC) holder in the regulatory heading that identifies the AD is incorrect. This document corrects that error. In all other respects, the original document remains the same; however, for clarity, the FAA is publishing the entire rule in the Federal Register.
AD 2020-16-51 · published Aug 11, 2020, effective Aug 26, 2020
The Boeing Company Airplanes
The FAA is adopting a new airworthiness directive (AD) for all The Boeing Company Model 737-300, -400, -500, -600, -700, -700C, -800, -900, and -900ER series airplanes. An emergency AD was sent to all known U.S. owners and operators of these airplanes. This AD requires inspections of the engine bleed air 5th stage check valve on each engine, and replacement of the engine bleed air 5th stage check valve if any inspection is not passed. This AD was prompted by four recent reports of single-engine shutdowns due to engine bleed air 5th stage check valves being stuck open. The FAA is issuing this AD to address the unsafe condition on these products.
AD 2020-16-04 · published Aug 13, 2020, effective Sep 2, 2020
Pacific Aerospace Limited Airplanes
The FAA is adopting a new airworthiness directive (AD) for certain Pacific Aerospace Limited Model 750XL airplanes. This AD results from mandatory continuing airworthiness information (MCAI) issued by the aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as an incorrect illustration of the screw jack assembly in the airplane maintenance manual, which may cause potential errors with installation. The FAA is issuing this AD to address the unsafe condition on these products.
AD 2020-16-05 · published Aug 13, 2020, effective Aug 28, 2020
Blanik Aircraft CZ s.r.o.
The FAA is adopting a new airworthiness directive (AD) for all Blanik Aircraft CZ s.r.o. Model L 23 Super-Blanik gliders. This AD requires a one-time inspection of the rudder control cable attachment screws and hinge bolts, replacement of the cable attachment screws and hinge bolts if a crack is found, and reporting the inspection results to the manufacturer. This AD was prompted by reports of cracked rudder cable attachment screws. The FAA is issuing this AD to address the unsafe condition on these products.
AD 2020-16-06 · published Aug 17, 2020, effective Sep 1, 2020
Aviat Aircraft Inc.
The FAA is adopting a new airworthiness directive (AD) for all Aviat Aircraft Inc. Models A-1, A-1A, A-1B, A-1C-180, and A-1C-200 airplanes. This AD requires repetitive inspections of the forward horizontal stabilizer support assembly and the rear horizontal stabilizer support tube and reporting information to the FAA. This AD was prompted by field reports of complete failure of both the forward support assembly and the rear support tube due to fatigue. The FAA is issuing this AD to address the unsafe condition on these products.
AD 2020-16-07 · published Aug 17, 2020, effective Sep 8, 2020
Pacific Aerospace Limited Airplanes
The FAA is adopting a new airworthiness directive (AD) for Pacific Aerospace Limited Model 750XL airplanes. This AD results from mandatory continuing airworthiness information (MCAI) issued by the aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI identifies the unsafe condition as nose landing gear (NLG) and main landing gear (MLG) attachment bolts without dual retaining devices. The FAA is issuing this AD to require actions to address the unsafe condition on these products.
AD 2020-16-12 · published Aug 17, 2020, effective Sep 8, 2020
Pacific Aerospace Limited Airplanes
The FAA is adopting a new airworthiness directive (AD) for Pacific Aerospace Limited Model 750XL airplanes. This AD results from mandatory continuing airworthiness information (MCAI) issued by the aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as inadvertent fuel shut-off to the engine during the operation of the flaps due to the fuel and flap control levers being located too closely together. The FAA is issuing this AD to address the unsafe condition on these products.
AD 2020-16-15 · published Aug 17, 2020, effective Sep 21, 2020
Viking Air Limited Airplanes
The FAA is adopting a new airworthiness directive (AD) for certain Viking Air Limited Models DHC-2 Mk. I and DHC-2 Mk. III airplanes. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as cracks reported on the forward and aft float strut wire pull fittings. The FAA is issuing this AD to address the unsafe condition on these products.
AD 2020-16-16 · published Aug 18, 2020, effective Sep 7, 2020
Pacific Aerospace Limited Airplanes
The FAA is adopting a new airworthiness directive (AD) for Pacific Aerospace Limited Model 750XL airplanes. This AD results from mandatory continuing airworthiness information (MCAI) issued by the aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as the outer race of bearing migrating out of the aileron pivot fork on the control column. The FAA is issuing this AD to address the unsafe condition on these products.
AD 2020-16-20 · published Aug 18, 2020, effective Sep 22, 2020
Pacific Aerospace Limited Airplanes
The FAA is superseding Airworthiness Directive (AD) AD 2018- 04-09 for Pacific Aerospace Limited Model 750XL airplanes. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as incorrectly marked and annunciated low oil- pressure indication warnings. The FAA is issuing this AD to address the unsafe condition on these products.
AD 2020-17-08 · published Aug 24, 2020, effective Sep 14, 2020
Pacific Aerospace Limited Airplanes
The FAA is adopting a new airworthiness directive (AD) for Pacific Aerospace Limited Model 750XL airplanes with wing lightning protection panels installed. This AD results from mandatory continuing airworthiness information (MCAI) issued by the aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as insufficient electrical bonding of the wing lightning protection panels. The FAA is issuing this AD to address the unsafe condition on these products.
AD 2020-16-18 · published Aug 25, 2020, effective Sep 9, 2020
Airbus SAS Airplanes
The FAA is adopting a new airworthiness directive (AD) for all Airbus SAS Model A310 series airplanes. This AD was prompted by reports of cracking found at certain fuselage frames. This AD requires repetitive inspections for discrepancies of certain locations in and around the fuselage and applicable corrective actions, as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
AD 2020-17-01 · published Aug 25, 2020, effective Sep 9, 2020
Airbus SAS Airplanes
The FAA is adopting a new airworthiness directive (AD) for certain Airbus SAS Model A319-115 and -153N; A320-214, -216, -232, - 251N, -252N, -271N, and -273N; and A321-211, -231, -251N, -253N, -271N, -272N, -251NX, -252NX, -253NX, and -271NX airplanes. This AD was prompted by reports of fuel leaks at the interface of the low pressure shut off valves on the pylon areas of engines 1 and 2 due to improperly installed parts during production. This AD requires a one-time detailed inspection of each low pressure shut off valve on the pylon areas of engines 1 and 2 for correct installation, and replacing the O-rings and torqueing the mounting bolts within specified values as applicable, as specified in a European Union Aviation Safety Agency (EASA) AD 2020- 0148, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
AD 2020-17-02 · published Aug 25, 2020, effective Aug 25, 2020
The Boeing Company Airplanes
The FAA is adopting a new airworthiness directive (AD) for certain The Boeing Company Model 747-8 and -8F series airplanes, and Model 787-8, -9, and -10 airplanes. This AD requires removing Kathon FP 1.5 biocide from the fuel tanks and engines, installing a fuel limitation placard, and revising the existing airplane flight manual (AFM) to prohibit operation of the airplane with Kathon FP 1.5 biocide in a fuel tank or engine. This AD was prompted by a report indicating that Kathon FP 1.5 biocide added to fuel and running through the engines can lead to significant engine anomalies. The FAA is issuing this AD to address the unsafe condition on these products.
AD 2020-17-04 · published Aug 25, 2020, effective Sep 29, 2020
The Boeing Company Airplanes
The FAA is superseding Airworthiness Directive (AD) 2019-03- 06, which applied to certain The Boeing Company Model 737-300, -400, and -500 series airplanes. AD 2019-03-06 required installing lanyard assemblies on the passenger service units (PSUs) and, for certain airplanes, on the life vest panels. This AD was prompted by a report indicating that the PSUs became separated from their attachments during several survivable accident sequences, and by the determination that additional actions are necessary for five airplanes. This AD retains the requirements of AD 2019-03-06 and also requires installation of lanyard assemblies on the life vest panels on those five airplanes. The FAA is issuing this AD to address the unsafe condition on these products.
AD 2020-17-09 · published Aug 25, 2020, effective Sep 29, 2020
GA8 Airvan (Pty) Ltd Airplanes
The FAA is adopting a new airworthiness directive (AD) for GA8 Airvan (Pty) Ltd Models GA8 and GA8-TC320 airplanes. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as a design change to the fuselage strut pick up ribs No. 5 and 6 that requires a reduced life limit. The FAA is issuing this AD to require actions to address the unsafe condition on these products.
AD 2020-17-12 · published Aug 25, 2020, effective Sep 9, 2020
Dassault Aviation Airplanes
The FAA is adopting a new airworthiness directive (AD) for certain Dassault Aviation Model MYSTERE-FALCON 900, FALCON 900EX, FALCON 2000, and FALCON 2000EX airplanes. This AD was prompted by reports of loose or missing nuts on the pilot and co-pilot ventral seat belt attachment points. This AD requires a detailed inspection of certain seat belt attaching point nuts for any loose or missing nuts and replacement, as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
AD 2020-15-21 · published Aug 27, 2020, effective Oct 1, 2020
Airbus SAS Airplanes
The FAA is adopting a new airworthiness directive (AD) for all Airbus SAS Model A330-200, -200 Freighter, and -300 series airplanes. This AD was prompted by a determination that certain inspection procedures specified an incorrect inspection area. This AD requires repetitive detailed inspections of a certain stringer location, and applicable corrective actions if necessary, as specified in European Union Aviation Safety Agency (EASA) AD 2019-0315, dated December 23, 2019, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
AD 2020-15-20 · published Aug 28, 2020, effective Oct 2, 2020
Airbus SAS Airplanes
The FAA is superseding Airworthiness Directive (AD) 2019-03- 11, which applied to certain Airbus SAS Model A350-941 and -1041 airplanes. AD 2019-03-11 required revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive maintenance requirements and airworthiness limitations. This AD requires revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
AD 2020-17-03 · published Aug 28, 2020, effective Oct 2, 2020
Airbus SAS Airplanes
The FAA is adopting a new airworthiness directive (AD) for certain Airbus SAS Model A318-111, -112, -121, and -122 airplanes; Model A319-111, -112, -113, -114, -115, -131, -132, and -133 airplanes; Model A320-211, -212, -214, -216, -231, -232, and -233 airplanes; and Model A321-111, -112, -131, -211, -212, -213, -231, and -232 airplanes. This AD was prompted by reports of fatigue cracks on continuity fittings at the lower framing of the front windshield on airplanes on which a certain production modification has been embodied. Additional analysis showed that certain certification requirements for damage tolerance and fatigue are not met on airplanes in a certain post- production modification configuration. This AD requires repetitive high frequency eddy current (HFEC) inspections of the central node windshield area for cracking, and applicable corrective actions if cracking is found, as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
AD 2020-15-17 · published Aug 5, 2020, effective Sep 9, 2020
Sikorsky Aircraft Corporation Helicopters
The FAA is adopting a new airworthiness directive (AD) for certain Sikorsky Aircraft Corporation Model S-76C helicopters. This AD was prompted by reports of inaccurate main gear box (MGB) indications in flight. This AD requires updating the remote data acquisition unit (RDAU) software and re-identifying the RDAU and, for certain helicopters, updating the software of the display unit (DU) and re- identifying the DU. The FAA is issuing this AD to address the unsafe condition on these products.
AD 2020-16-09 · published Aug 6, 2020, effective Sep 10, 2020
Airbus Helicopters (Type Certificate Previously Held by Eurocopter France) Helicopters
The FAA is superseding Airworthiness Directive (AD) 2009-25-09 for Eurocopter France (now Airbus Helicopters) Model SA330F, G, and J helicopters. AD 2009-25-09 required re-adjusting the torque of the main gearbox (MGB) flexible coupling bolts. Since the FAA issued AD 2009-25- 09, Airbus Helicopters has modified the MGB overhaul and repair procedures, which corrects the unsafe condition. Additionally, the FAA- validation for Model SA330F and G helicopters has been cancelled. This new AD retains the requirements of AD 2009-25-09 and revises the applicability by excluding Model SA330F and G helicopters and excludes MGBs that have been subject to the modified procedures. The actions of this AD are intended to address an unsafe condition on these products.
AD 2020-17-05 · published Aug 13, 2020, effective Sep 17, 2020
Airbus Helicopters Deutschland GmbH Helicopters
The FAA is adopting a new airworthiness directive (AD) for certain Airbus Helicopters Deutschland GmbH Model MBB-BK 117 D-2 helicopters. This AD was prompted by the discovery that certain longitudinal trim actuators, lateral trim actuators, and yaw trim actuators, which are certified for installation on MBB-BK 117 C-2 helicopters, were erroneously listed as eligible for installation on MBB-BK 117 D-2 helicopters. This AD requires removing the affected parts from service and prohibits installing the affected parts on MBB- BK 117 D-2 helicopters. The FAA is issuing this AD to address the unsafe condition on these products.
AD 2020-16-19 · published Aug 17, 2020, effective Sep 21, 2020
Sikorsky Aircraft Corporation Helicopters
The FAA is adopting a new airworthiness directive (AD) for certain Sikorsky Aircraft Corporation (Sikorsky) Model S-92A helicopters. This AD was prompted by two incidents of erroneous low oil pressure caution cockpit indications and unintended actuation of the main gearbox (MGB) auto bypass valve. This AD requires installing auxiliary circuit breaker modification (MOD) kits and inserting a Rotorcraft Flight Manual (RFM) Supplement into the existing RFM for your helicopter. The FAA is issuing this AD to address the unsafe condition on these products.
AD 2020-17-10 · published Aug 17, 2020, effective Sep 21, 2020
Bell Helicopter Textron Canada Limited Helicopters
The FAA is superseding Airworthiness Directive (AD) 2016-02-06 for Bell Helicopter Textron Canada Limited (Bell) Model 429 helicopters. AD 2016-02-06 required inspecting certain tail rotor (T/R) pitch link bearing bores for corrosion and pitting. AD 2016-02-06 also required a repetitive inspection of the sealant and repeating the inspections for corrosion and pitting if any sealant is missing. This new AD retains the requirements of AD 2016-02-06, expands the applicability, and adds a repetitive inspection. This AD was prompted by an FAA determination that additional part-numbered T/R pitch link assemblies (links) are affected by the same unsafe condition and that an additional repetitive inspection is necessary to address the unsafe condition. The actions of this AD are intended to address an unsafe condition on these products.
AD 2020-17-11 · published Aug 18, 2020, effective Sep 22, 2020
Airbus Helicopters
The FAA is superseding Airworthiness Directive (AD) 2017-14-05 for Airbus Helicopters Model SA330J helicopters. AD 2017-14-05 required replacing certain right-hand (RH) hydraulic pumps and was prompted by reports of broken screws that attach the cover of the hydraulic pump. This new AD requires replacing certain left-hand (LH) and RH hydraulic pumps. This AD was prompted by reports of broken bolts that attach the cover of the hydraulic pump. The actions of this AD are intended to address an unsafe condition on these products.
AD 2020-15-18 · published Aug 27, 2020, effective Sep 3, 2020
Leonardo S.p.A. Helicopters
The FAA is correcting an airworthiness directive (AD) that published in the Federal Register. That AD applies to certain Leonardo S.p.A. (Leonardo) Model AB139, AW139, AW169, and AW189 helicopters. As published, one service bulletin reference in the AD is incorrect. This document corrects that error. In all other respects, the original document remains the same.
AD 2020-18-08 · published Aug 27, 2020, effective Aug 27, 2020
Robinson Helicopter Company
The FAA is superseding Airworthiness Directive (AD) 2019-12-18 for Robinson Helicopter Company (Robinson) Model R44 II helicopters. AD 2019-12-18 required inspecting certain engine air induction hoses (hoses) and replacing any hose that was not airworthy. AD 2019-12-18 also prohibited the installation of certain hoses. This AD continues to require inspecting those previously affected hoses and amends the applicability, clarifies an inspection requirement, adds a requirement to repeat the inspection, and expands the installation prohibition. This AD was prompted by an additional report of separation between the outer and inner hose layers. The FAA is issuing this AD to address the unsafe condition on these products.
AD 2020-16-11 · published Aug 17, 2020, effective Sep 21, 2020
Continental Aerospace Technologies, Inc. (Type Certificate Previously Held by Continental Motors, Inc.) Reciprocating Engines
The FAA is adopting a new airworthiness directive (AD) for all Continental Aerospace Technologies, Inc. model GTSIO-520-C, GTSIO-520- D, GTSIO-520-H, GTSIO-520-K, GTSIO-520-L, GTSIO-520-M, GTSIO-520-N, IO- 550-G, IO-550-N, IO-550-P, IO-550-R, IOF-550-N, IOF-550-P, IOF-550-R, TSIO-520-BE, TSIO-550-A, TSIO-550-B, TSIO-550-C, TSIO-550-E, TSIO-550- G, TSIO-550-K, TSIO-550-N, TSIOF-550-D, TSIOF-550-J, TSIOF-550-K, and TSIOF-550-P reciprocating aviation gasoline (AvGas) engines with a certain cross-flow cylinder assembly installed. This AD was prompted by reports of in-flight engine failures due to fractured cross-flow cylinder assemblies. This AD requires visual inspection and, depending on the results of the inspection, modification or replacement of the cross-flow cylinder assembly. The FAA is issuing this AD to address the unsafe condition on these products.
AD 2020-16-17 · published Aug 17, 2020, effective Sep 21, 2020
Rolls-Royce Deutschland Ltd & Co KG (Type Certificate Previously Held by Rolls-Royce plc) Turbofan Engines
The FAA is adopting a new airworthiness directive (AD) for all Rolls-Royce Deutschland Ltd. & Co KG (RRD) Trent XWB-75, Trent XWB-79, Trent XWB-79B, and Trent XWB-84 model turbofan engines. This AD was prompted by reports of a lack of weld fusion on the resistance welding during manufacturing, which could result in air leakage through the low-pressure turbine (LPT) rear support seal panel assembly ("LPT seal panel"). This AD requires replacement of the LPT seal panel. The FAA is issuing this AD to address the unsafe condition on these products.
AD 2020-16-08 · published Aug 17, 2020, effective Aug 17, 2020
Aspen Avionics, Inc.
The FAA is correcting an airworthiness directive (AD) that published in the Federal Register. The AD applies to certain Aspen Avionics, Inc., Evolution Flight Display (EFD) EFD1000 Emergency Backup Display, EFD1000 Multi-Function Display, and EFD1000 Primary Flight Display systems installed on various airplanes. As published, the docket number and product identifier in the Comments Invited section of the preamble are incorrect. This document corrects that error. In all other respects, the original document remains the same; however, for clarity, the FAA is publishing the entire rule in the Federal Register.
AD 2020-13-09 · published Aug 6, 2020, effective Aug 26, 2020
DG Flugzeugbau GmbH Gliders
The FAA is adopting a new airworthiness directive (AD) for all DG Flugzeugbau GmbH Models DG-500 Elan Orion, DG-500 Elan Trainer, DG- 500/20 Elan, DG-500/22 Elan, DG-500M, and DG-500MB gliders and certain Models DG-1000S and DG-1000T gliders. This AD results from mandatory continuing airworthiness information (MCAI) issued by the aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as the rear locking rod of the rear canopy rotating out of the threads of the operating mechanism, which could lead to blocking of the canopy emergency release system, preventing safe escape of occupants from the glider. The FAA is issuing this AD to require actions to address the unsafe condition on these products.
