# AD 71-01-03: Cracks In Stabilizer Attachment Angles

- Type: Airworthiness directive
- Status: Current
- Products: Cessna 177 and 177A
- Effective: January 5, 1971
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Amendment: 39-1138
- Registered aircraft: 527 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B337D18C595EAB5D86256A1C0074A170.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/71-01-03

## The airworthiness directive

71-01-03 CESSNA: Amdt. 39-1138. Applies to Model 177 series (Serial Numbers 17700001 through 17701164) and Model 177A series (Serial Numbers 17701165 through 17701370) Airplanes.

Compliance: Required as indicated, unless already accomplished.

To prevent cracks in the stabilator attachment angles P/N 1712108, accomplish the following:

A) Within 25 hours' time in service after the effective date of this AD, remove the fuselage tail stinger and inspect the stabilator attachment angles, P/N 1712108, for evidence of cracks using the dye penetrant method in conjunction with the procedure set forth in Cessna Service Kit, No. SK 177-11, dated December 8, 1970, or any other method approved by the Chief, Engineering and Manufacturing Branch, FAA, Central Region. If no cracks are found during this inspection, install stiffener brackets, P/N 1709019-3 and -4, in accordance with the instructions contained in said Service Kit.

B) If cracks are detected during the inspectionrequired by Paragraph A, prior to further flight, rework or replace the stabilator attachment angles, P/N 1712108, and then install stiffener brackets P/N 1709019-3 and -4 in accordance with the instructions contained in Cessna Service Kit SK 177-11, dated December 8, 1970, or any other method approved by the Chief, Engineering and Manufacturing Branch, FAA, Central Region.

Cessna Service Letter SE70-32, dated December 18, 1970, or later FAA-approved revisions pertain to this subject.

This amendment becomes effective January 5, 1971.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A13CE](https://openairdocs.org/tcds/A13CE): Textron Aviation Inc.; names 2 of 3 models: 177, 177A

## Registered aircraft it may apply to (OpenAirDocs)

Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment.

- Aircraft: 527 (527 by airframe model, 0 by engine model)
- Makers: Cessna 527

Models with the most aircraft:

- [Cessna 177](https://openairdocs.org/model/cessna-177): 446 aircraft (airframe model)
- [Cessna 177A](https://openairdocs.org/model/cessna-177a): 81 aircraft (airframe model)

All 2 models: https://openairdocs.org/ad/71-01-03/models.md
Every aircraft: https://openairdocs.org/ad/71-01-03/aircraft.md

Its text cites no advisory circulars or STCs.

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