# AD 68-08-01: Cylinder Attach Screws

- Type: Airworthiness directive
- Status: Current
- Products: McCauley Propeller Systems 2A34C, 2A36C23, 2A36C29, 2A36C82, 2D34C, 3A32C76, B2A36C31, C2A36C32, D2A34C, D2A36C31, D2A36C33, D2A36C45 and 5 more
- Effective: January 21, 1972
- Superseded by: Nothing supersedes this AD
- Product type: Propeller
- Amendment: 39-1377
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/75F1668E37ADF1C486256E0100546939.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/68-08-01

## The airworthiness directive

68-08-01 MCCAULEY AIRCRAFT PROPELLERS: Amdt. 39-581 as amended by Amendment 39-1314 is further amended by Amendment 39-1377. Applies to the following two- and three-bladed constant speed propeller models with hub serial numbers indicated below:

PROPELLER MODELS

2D34C8 C2A36C32 D2A34C58-B 3A32C76-S D2A34C78-K 2D34C8-A C2A36C32-A D2A34C58-J 3A32C76-T D2A34C78-L 2D34C8-J C2A36C32-D D2A34C58-K 3A32C76-AD D2A34C78-M 2D34C8-K D2A36C33 D2A34C58-L 3A32C76-AS D3A32C79 2D34C8-M D2A36C33-D D2A34C58-M 3A32C76-AT D3A32C79-A 2A36C23-C D2A36C45 2A34C66 3A32C76-FD D3A32C79-B 2A36C23-CD D2A36C45-D 2A34C66-A 3A32C76-FS D3A32C79-F 2A36C23-CH D2A34C49 2A34C66-B 3A32C76-FT D3A32C79-J 2A36C23-CJ D2A34C49-A 2A34C66-C 3A32C76-JD D3A32C79-K 2A36C23-CP D2A34C49-B 2A34C66-J 3A32C76-JS 2A36C82-T 2A36C23-CS D2A34C49-J 2A34C66-K 3A32C76-JT 2A36C82-DT 2A36C23-DD D2A34C49-K 2A34C66-L 3A32C76-KD D3A32C88 2A36C23-DH D2A34C49-L 2A34C66-M 3A32C76-KS D3A32C88-A 2A36C23-DJ D2A34C49-M E2A34C70 3A32C76-KT D3A32C88-F 2A36C23-DP 2A34C50 E2A34C70-A D3A32C77 D3A32C88-J 2A36C29 2A34C50-A E2A34C70-J D3A32C77-A D3A32C88-K 2A36C29-A 2A34C50-B E2A34C70-K D3A32C77-F D3A32C90 2A36C29-D 2A34C50-J E2A34C70-M D2A32C77-J D3A32C90-A B2A36C31 2A34C50-K E2A34C73 D3A32C77-K D3A32C90-B B2A36C31-A 2A34C50-L E2A34C73-A D2A34C78 D3A32C90-C B2A36C31-D 2A34C50-M E2A34C73-J D2A34C78-A D3A32C90-F D2A36C31-A D2A34C58 E2A34C73-K D2A34C78-B D3A32C90-J D2A36C31-D D2A34C58-A E2A34C73-M D2A34C78-J D3A32C90-K

3A32C76-D

HUB SERIAL NUMBERS 59000 up to and including 712778 except 700492, 700500 thru 700558; 700561 thru 700568; 700570 thru 700594; 700596 thru 701050 and 701053

Compliance required within the next 100 hours' time in service after the effective date of this AD, unless already accomplished. To prevent failure of the propeller cylinder attach screws, accomplish the following:

Modify propeller cylinder attachment in accordance with McCauley Service Bulletin No. 92, dated April 21, 1971, or later FAA-approved revision. However, for propellers used on Bellanca Aircraft Models 17-30 and 17-30A modify propeller cylinder attachment in accordance with McCauley Service Bulletin No. 94, dated July 28, 1971, or later FAA-approved revision instead of Service Bulletin No. 92. Equivalent methods of compliance with this AD must be approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region.

Amendment 39-581 was effective April 11, 1968.

Amendment 39-1314 was effective October 14, 1971.

This Amendment 39-1377 is effective January 21, 1972.

## Affected data sheets (4) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS P-880](https://openairdocs.org/tcds/P-880): McCauley Propeller Systems; names 8 of 11 models: D2A36C33, C2A36C32, B2A36C31, 2A36C82, 2A36C29, D2A36C31, 2A36C23, D2A36C45
- [TCDS P21EA](https://openairdocs.org/tcds/P21EA): McCauley Propeller Systems; names 5 of 5 models: D3A32C90, D3A32C79, D3A32C88, 3A32C76, D3A32C77
- [TCDS P3EA](https://openairdocs.org/tcds/P3EA): McCauley Propeller Systems; names 3 of 10 models: E2A34C, 2A34C, D2A34C
- [TCDS P7EA](https://openairdocs.org/tcds/P7EA): McCauley Propeller Systems; names 1 of 4 models: 2D34C

## Registered aircraft it may apply to (OpenAirDocs)

No registered aircraft matched the models it names.

Its text cites no advisory circulars or STCs.

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