30 Airworthiness Directives: 22 airplane, 2 rotorcraft, 3 engine, 3 appliance.
AD 93-25-04 · published Jan 3, 1994, effective Jan 3, 1994
Gulfstream Aerospace Corporation Airplanes
AD 93-23-11 · published Jan 5, 1994, effective Jan 5, 1994
The Boeing Company Airplanes
AD 93-24-51 · published Jan 5, 1994, effective Jan 20, 1994
Airbus Airplanes
This document publishes in the Federal Register an amendment adopting Airworthiness Directive (AD) T93-24-51 that was sent previously to all known U.S. owners and operators of all Airbus Model A310 and A300-600 series airplanes by individual telegrams. This AD requires repetitive operational tests of feel and limitation computers (FLC) 1 and 2. This amendment is prompted by a report that the pitch control on a Model A300-600 series airplane operated with stiffness. The actions specified by this AD are intended to prevent stiff operation of the pitch control and undetected loss of rudder travel limitation function.
AD 93-24-12 · published Jan 10, 1994, effective Jan 10, 1994
Lockheed Martin Corporation Airplanes
AD 94-12-03 · published Jan 10, 1994, effective Jan 10, 1994
Airbus Airplanes
This amendment supersedes an existing airworthiness directive (AD), applicable to certain Airbus Model A320 series airplanes, that currently requires modification of the belly fairing structure. This amendment revises the compliance time for accomplishment of the modification. This amendment is prompted by the fact that the compliance time of the existing rule would have allowed operators of low-cycle airplanes to accomplish the modification at a time considerably later than that intended. The requirements of this amendment are intended to ensure that the structural integrity of the belly fairing structure is maintained.
AD 94-01-09 · published Jan 11, 1994, effective Jan 26, 1994
Bombardier Inc. Airplanes
This amendment adopts a new airworthiness directive (AD) that is applicable to Canadair Model CL-600-2B19 "Regional Jet" Series 100 airplanes. This action requires a revision to the Airplane Flight Manual (AFM) to limit altitude and airspeed operations of the airplane under certain conditions of hydraulic system failure. This amendment is prompted by a report of sheared- off shear pins found on one airplane's elevator dampers. The actions specified in this AD are intended to prevent undampened vibration of the elevators in normal cruise conditions when combined with hydraulic system failures, a condition which could result in reduced controllability of the airplane.
AD 94-01-01 · published Jan 13, 1994, effective Feb 11, 1994
Textron Aviation Inc. Airplanes
This amendment adopts a new airworthiness directive (AD) that applies to certain Beech Aircraft Corporation (Beech ) Models B300 and B300C airplanes that do not have all cabin seats modified through the incorporation of Beech Kit No. 303-307. This action requires inspecting the cabin seat frames for cracks, repairing any cracks, and modifying the cabin seat frames by incorporating the kit referenced above. Inspection of affected in-service airplanes reveals cracking of these cabin seats around the welded-in bushings. The bearing shafts, which retain the seat frame and belted occupant, are bolted to the frame through these bushings. The actions specified by this AD are intended to prevent separation of the seat from its base caused by cracks around the welded-in bushings, which, in the event of an accident, could result in occupant injury.
AD 93-24-06 · published Jan 18, 1994, effective Jan 18, 1994
Kelowna Flightcraft R & D Ltd. Airplanes
AD 93-24-08 · published Jan 18, 1994, effective Jan 18, 1994
Textron Aviation Inc. Airplanes
AD 93-24-10 · published Jan 18, 1994, effective Jan 18, 1994
Learjet Inc. Airplanes
AD 93-25-01 · published Jan 19, 1994, effective Jan 19, 1994
Bombardier Inc. Airplanes
AD 93-25-02 · published Jan 19, 1994, effective Jan 19, 1994
Bombardier Inc. Airplanes
AD 93-25-03 · published Jan 19, 1994, effective Jan 19, 1994
Israel Aircraft Industries, Ltd. Airplanes
AD 93-24-01 · published Jan 20, 1994, effective Jan 20, 1994
Textron Aviation Inc. Airplanes
AD 93-24-03 · published Jan 21, 1994, effective Jan 21, 1994
Textron Aviation Inc. Airplanes
AD 93-24-09 · published Jan 21, 1994, effective Jan 21, 1994
BAE Systems (Operations) Limited Airplanes
AD 93-25-11 · published Jan 26, 1994, effective Jan 26, 1994
Short Brothers PLC Airplanes
AD 93-24-14 · published Jan 28, 1994, effective Jan 28, 1994
Piper Aircraft, Inc., The New Airplanes
AD 94-01-08 · published Jan 28, 1994, effective Jan 28, 1994
The Boeing Company Airplanes
This amendment adopts a new airworthiness directive (AD) that is applicable to certain McDonnell Douglas Model DC-9 and C-9 (military) series airplanes. This action requires inspections to detect cracking in the ventral aft pressure bulkhead, and repair, if necessary. This amendment is prompted by reports of cracking found in the ventral aft pressure bulkhead on several airplanes. The actions specified in this AD are intended to prevent the propagation of cracks in the ventral aft pressure bulkhead, which could lead to failure of the bulkhead and subsequent rapid decompression of the airplane.
AD 94-01-14 · published Jan 28, 1994, effective Jan 28, 1994
Bombardier Inc. Airplanes
This amendment adopts a new airworthiness directive (AD) that is applicable to certain Canadair Model CL-600-2B19 (Regional Jet) series airplanes. This action revises the FAA-approved Airplane Flight Manual (AFM) to require that both integrated drive generators (IDG) be operational for dispatch. This AD also requires repetitive inspections of the IDG oil level, and replenishing with oil, if necessary; and, for certain airplanes, an inspection of the oil level, and replacement of the IDG with a serviceable unit. This AD also specifies an optional terminating action for the repetitive inspections and AFM revision. This amendment is prompted by reports of failures of the IDG constant speed drive (CSD) on Canadair Model CL-600-2B19 series airplanes. The actions specified in this AD are intended to prevent loss of engine oil and subsequent engine shutdown during flight.
AD 93-21-10 · published Jan 18, 1994, effective Jan 18, 1994
Bell Helicopter Textron, Inc. Helicopters
AD 93-15-10 · published Jan 28, 1994, effective Jan 28, 1994
Enstrom Helicopter Corporation, The Helicopters
AD 93-23-05 · published Jan 10, 1994, effective Jan 10, 1994
General Electric Company Engines
AD 93-23-06 · published Jan 26, 1994, effective Jan 26, 1994
Pratt & Whitney Canada Corp. Engines
AD 94-02-06 · published Jan 27, 1994, effective Feb 28, 1994
Wytwornia Sprzetu Komunikacyjnego Engines
AD 94-01-05 · published Jan 5, 1994, effective Feb 4, 1994
Airbus, Allied Signal Aerospace Company, ATR - GIE Avions de Transport Régional, The Boeing Company, Bombardier Inc., Fokker Services, Gulfstream Aerospace Corporation, Textron Aviation Inc., Kelowna Flightcraft R & D Ltd., Lockheed Martin Corporation, Sabreliner Corporation, Viking Air Limited Appliances
This amendment adopts a new airworthiness directive (AD) that applies to certain Allied Signal Aerospace Company, Air Transport Avionics (Allied Signal) Traffic Alert and Collision Avoidance System (TCAS) II processors that are installed on aircraft. This action requires replacing the existing TCAS II processor with a new processor that incorporates updated computer logic. The development of candidate enhancements to TCAS II logic that improves its utility and increases its overall operational acceptance prompted the proposed action. The actions specified by this AD are intended to prevent collisions or near misses caused by incompatibility between the TCAS II processors and the current air traffic control system.
AD 94-01-06 · published Jan 5, 1994, effective Feb 4, 1994
Airbus SAS, ATR - GIE Avions de Transport Régional, BAE Systems (Operations) Limited, The Boeing Company, Bombardier Inc., Dassault Aviation, Gulfstream Aerospace LP, Textron Aviation Inc., Learjet Inc., Lockheed Martin Corporation, Saab AB, Saab Aerosystems, Sabreliner Corporation, Short Brothers PLC, Viking Air Limited, Rockwell Collins, Inc. Appliances
This amendment adopts a new airworthiness directive (AD) that applies to certain Rockwell International, Collins Air Transport Division (Collins), Traffic Alert and Collision Avoidance System (TCAS) II processors that are installed on aircraft. This action requires replacing the existing TCAS II processor with a new processor that incorporates updated computer logic or reprogramming certain processors while they are still on board the aircraft. The development of candidate enhancements to TCAS II logic that improves its utility and increases its overall operational acceptance prompted the proposed action. The actions specified by this AD are intended to prevent collisions or near misses caused by incompatibility between the TCAS II processors and the current air traffic control system.
AD 94-02-02 · published Jan 18, 1994, effective Feb 21, 1994
Airbus, The Boeing Company, Fokker Services, Rockwell Collins, Inc. Appliances
This amendment adopts a new airworthiness directive (AD) that applies to Rockwell International/Air Transport Division (Collins) DME-700 distance measuring equipment (DME) installed on aircraft. This action requires modifying these DME units to ensure they are functioning properly. Several reports of the affected DME units failing to process and update distance outputs, and reports of these units establishing a continuous restart mode upon power application prompted this AD. The actions specified by this AD are intended to prevent improper operation of this equipment, which could result in navigational errors.
