Airworthiness Directive · Amendment 39-15311 · Hartzell Propeller Inc. Compact Series Propellers
Hartzell Propeller Inc. Compact Series Propellers
This AD applies to all Hartzell Propeller Inc. models ()HC-()()Y()-()()() compact series constant speed or feathering propellers with Hartzell manufactured “Y” shank aluminum blades. These propellers are used on, but not limited to, the following airplanes:
| Manufacturer | Airplane Model |
|---|---|
| Aermacchi S.pA. (formerly Siai-Marchetti) | S-208 |
| Aero Commander | 200B and 200D |
| Aerostar | 600 |
| Beech | 24, 35, 36, 45, 55, 56TC, 58, 60, and 95 |
| Bellanca | 14 and 17 series |
| Cessna | 182 and 188 |
| Embraer | EMB-200A |
| Maule | M5 |
| Mooney | M20 and M22 |
| Pilatus Britten Norman, or Britten Norman | BN-2, BN-2A, and BN-2A-6 |
| Piper | PA-23, PA-24, PA-28, PA-30, PA-31, PA-32, PA-34, PA-36, and PA-39 |
| Pitts | S-1T and S-2A |
| Rockwell | 112, 114, 200, 500, and 685 series |
(d) The parentheses appearing in the propeller model number indicates the presence or absence of an additional letter(s) that varies the basic propeller model. This AD applies regardless of whether these letters are present or absent in the propeller model designation.
The FAA is superseding an existing airworthiness directive (AD) for all Hartzell Propeller Inc. models ( )HC-( )( )Y( )-( )( )( ) compact series, constant speed or feathering propellers with Hartzell manufactured "Y" shank aluminum blades. That AD currently requires initial blade inspections, with no repetitive inspections; rework of all "Y" shank aluminum blades including cold rolling of the blade shank retention radius, blade replacement and modification of pitch change mechanisms for certain propeller models; and changing the airplane operating limitations with specific models of propellers installed. This AD requires the same actions but clarifies certain areas of the compliance, and updates a certain service bulletin (SB) reference to the most recent SB. This AD results from operators requesting clarification of certain portions of AD 2002-09-08. We are issuing this AD to prevent failure of the propeller blade from fatigue cracks in the blade shank radius, which can result in damage to the airplane and loss of airplane control.
You are responsible for having the actions required by this AD performed within the compliance times specified unless the actions have already been done.
(g) If the propeller maintenance records show compliance with AD 77-12-06R2, then compliance was previously done and no further action is required.
(h) Propellers are considered in compliance with the one-time inspection and rework requirements only, of this AD if:
(1) All blades are serial number D47534 and above, or
(2) All blades are identified with the letters “PR” or “R” which are ink-stamped on the camber side, or the letters “RD” which are metal-stamped on the blade butt.
(i) If propeller models ()HC-()()Y() have not been inspected and reworked in accordance with AD 77-12-06R2, then before further flight, do a one-time action to remove, inspect, rework, or replace blades if necessary using Hartzell Service Bulletin (SB) No. 118A, dated February 15, 1977.
One requirement in Hartzell SB No. 118A is the cold rolling of the propeller blade shank.
(1) Cold rolling is a critical requirement in the prevention of cracks in the blade. Propeller repair shops must obtain and maintain proper certification to perform the cold rolling procedure.
(2) For a current list of propeller overhaul facilities approved to perform the blade shank cold rolling procedure, contact Hartzell Product Support, telephone (937) 778-4200.
(3) Not all propeller repair facilities have the equipment to properly perform a cold roll of the blade shanks.
(4) In addition, any rework in the blade shank area will also necessitate the cold rolling of the blade shank area, apart from the one-time cold rolling requirement of this AD.
If airplanes with propeller models ()HC-C2YK-()()()/()()7666A-(), installed on (undampered) 200 or more horsepower Lycoming IO-360 series engines, have not been modified using AD 77-12-06R2, then modify the airplane instrument panel according to the following subparagraphs before further flight. Airplanes include, but are not limited to, Mooney M20E and M20F (normal category), Piper PA-28R-200 (normal category), and Pitts S-1T and S-2A (acrobatic category).
(1) For normal category airplanes, before further flight, remove the present vibration placard and affix a new placard near the engine tachometer that states:
“Avoid continuous operation:
Between 2,000 and 2,350 rpm.”
(2) For utility and acrobatic category airplanes, before further flight, remove the present vibration placard and affix a new placard near the engine tachometer that states:
“Avoid continuous operation:
Between 2,000 and 2,350 rpm.
Above 2,600 rpm in acrobatic flight.”
(3) For normal category airplanes, re-mark the engine tachometer face or bezel with a red arc for the restricted engine speed range, between 2,000 and 2,350 rpm.
(4) For acrobatic and utility airplanes, re-mark the engine tachometer face or bezel with a red arc for each restricted engine speed range, i.e., between 2,000 and 2,350 rpm and between 2,600 and 2,700 rpm (red line).
If propeller models ()HC-C2YK-()()()/()()8475()-() or ()()8477()-() have not been inspected and reworked in accordance with AD 74-15-02, then do the following maintenance before further flight.
(1) Remove propeller from airplane.
(2) Modify pitch change mechanism, and replace blades with equivalent model blades prefixed with letter “F” using Hartzell Service Letter No. 69, dated November 30, 1971 and Hartzell SB No. 101D, dated December 19, 1974.
(3) Inspect and repair or replace, if necessary, using Hartzell SB No. 118A, dated February 15, 1977.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Propellers
