- Effective
- August 31, 1971
- Model
- 2AF34C55
- Data sheet
- TCDSP5EA
- Product
- Propeller
- Amendment
- 39-1274
Unofficial copy of the text in the FAA’s Dynamic Regulatory System. The FAA’s own copy is the authoritative one. DRS record last changed May 30, 2024.
Copies of the files this page was built from, with their SHA-256. Retrieved October 18, 2026.
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The airworthiness directive
71-18-02 MCCAULEY: Amdt. 39-1274. Applies to Model 2AF34C55, 2AF34C55-A, B, C, D, E, F, G, H, HM, J, JM, K, KM, L, LM, M and N propellers.
Compliance required as indicated, unless already accomplished.
To prevent propeller counterweight assembly failures accomplish the following:
(a) Propellers with 750 hours or more time in service as of the effective date of this airworthiness directive must be modified in accordance with paragraph (c) within the next 100 hours time in service.
(b) Propellers with less than 750 hours in service as of the effective date of this airworthiness directive must be modified in accordance with paragraph (c) prior to the accumulation of 850 hours in service.
(c) Modify propeller counterweight assembly in accordance with McCauley Service Bulletin Nos. 93 dated 21 April 1971 and 93-1 dated 30 June 1971 or later FAA approved revision or an equivalent method approved by the Chief, Engineering and Manufacturing Branch, Eastern Region.NOTE: McCauley Service Bulletin 93-2 lists serial numbers of 2AF34C55N propeller hub assemblies which were in compliance with this airworthiness directive when shipped from the manufacturer.
This amendment is effective August 31, 1971.
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.