# AD 71-17-03: Hubs

- Type: Airworthiness directive
- Status: Current
- Products: McCauley Propeller Systems D3A32C77, D3A32C79, D3A32C88 and D3A32C90
- Effective: August 18, 1971
- Superseded by: Nothing supersedes this AD
- Product type: Propeller
- Amendment: 39-1265
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/9B9781DD0F10991486256965006E2F3F.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/71-17-03

## The airworthiness directive

71-17-03 MCCAULEY AIRCRAFT: Amendment 39-1265. Applies to following propeller models with hub serial numbers installed on Cessna 206, U206, and P206 series aircraft with Continental IO-520 series engines.

PROPELLER MODELS

D3A32C77/82NK-2 D3A32C88-A/82NC-2 D3A32C77-A/82NK-2 D3A32C88-F/82NC-2 D3A32C77-F/82NK-2 D3A32C88-J/82NC-2 D3A32C77-J/82NK-2 D3A32C90/82NC-2 D3A32C79/82NK-2 D3A32C90-A/82NC-2 D3A32C79-A/82NK-2 D3A32C90-B/82NC-2 D3A32C79-B/82NK-2 D3A32C90-C/82NC-2 D3A32C79-F/82NK-2 D3A32C90-F/82NC-2 D3A32C79-J/82NK-2 D3A32C90-J/82NC-2 D3A32C88/82NC-2

HUB SERIAL NUMBERS

650000 up to and including 686370 except for the following serial numbers:

685222 thru 685238 685977 thru 685982 685290 686087 685391 and 685392 686082 thru 686084 685408 686181 and 686182 685557 and 685558 686210 thru 686214 685848 thru 685855 686367 thru 686369 685907 thru 685918

Compliance required as indicated, unless already accomplished.a. Propellers with 600 or more total hours in service replace or rework hubs in accordance with paragraphs c or d within the next 25 hours in service after the effective date of this airworthiness directive.

b. Propellers with less than 600 total hours in service replace or rework hubs in accordance with paragraphs c or d prior to the accumulation of 625 hours in service.

c. Replace the following hubs with a serviceable hub model listed in Table IV of McCauley Service Bulletin No. 89 dated 14 May 1971 or later FAA approved revision, or with a D3A32C77-KLM, LM, or -M; D3A32C79-KLM, LM, or -M; D3A32C88-KLM, -LM, or -M, or D3A32C90-KLM, -LM or -M model:

HUB MODELS

D3A32C79, D3A32C79-A, D3A32C90, D3A32C90-A, D3A32C90-B

HUB SERIAL NUMBERS

650000 up to and including 670855

d. Rework the following hub models in accordance with paragraph 3, page 2 of McCauley Service Bulletin No. 89 dated 14 May 1971 or later FAA approved revision, or an equivalent method approved by the Chief, Engineering and Manufacturing Division, FAA Eastern Region.

D3A32C77 D3A32C88-A D3A32C77-A D3A32C88-F D3A32C77-F D3A32C88-J D3A32C77-J D3A32C90-B D3A32C79-B D3A32C90-C D3A32C79-F D3A32C90-F D3A32C79-J D3A32C90-J D3A32C88

NOTE: Cessna Service Letter SE71-15 also covers this subject.

This amendment is effective August 18, 1971.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS P21EA](https://openairdocs.org/tcds/P21EA): McCauley Propeller Systems; names 4 of 5 models: D3A32C90, D3A32C79, D3A32C88, D3A32C77

## 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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