# AD 70-23-04: Wing Flap Tracks

- Type: Airworthiness directive
- Status: Current
- Products: Aerostar PA-60-600 (Aerostar 600) and PA-60-601 (Aerostar 601)
- Effective: August 23, 1971
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Amendment: 39-1270
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/339855A42F5D614786256E01005ACCCB.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/70-23-04

## The airworthiness directive

70-23-04 AEROSTAR: Amdt. 39-1109 as amended by Amendment 39-1270. Applies to Model 600 and 601 airplanes, Serial Numbers 60-0001 through 60-0056 and 61-0001 through 61-0070.

Compliance required as indicated unless already accomplished. To prevent failure of the wing flap tracks, jamming of the ailerons and possible loss of lateral control, accomplish the following:

a. Before further flight after the effective date of this AD, except that the airplane may be flown in accordance with FAR 21.197 to a base where the repair can be performed:

  (1) Install wing flap speed placard in accordance with Aerostar Service Bulletin No. 600-22A, dated August 12, 1970, or by an equivalent method approved by the Chief, Engineering and Manufacturing Branch, Southwest Region, FAA, Fort Worth, Texas.

  (2) Inspect flap tracks in accordance with Aerostar Service Bulletin 600-22A, dated August 12, 1970, or by an equivalent method approved by the Chief, Engineering and ManufacturingBranch, Southwest Region, FAA, Fort Worth, Texas.

  (3) If cracks are found, repair before further flight in accordance with Parts II, III and IV of Aerostar Service Bulletin 600-23, dated November 4, 1970, or by an equivalent method approved by the Chief, Engineering and Manufacturing Branch, Southwest Region, FAA, Fort Worth, Texas.

b. At the next annual inspection, or within the next 100 hours' time in service, whichever comes first after the effective date of this AD, install Aerostar Kit No. SB 600-23-1 in accordance with Aerostar Service Bulletin No. 600-23, dated November 4, 1970, or by an equivalent method approved by the Chief, Engineering and Manufacturing Branch, Southwest Region, FAA, Fort Worth, Texas.

NOTE: Additional holes must be drilled in the wing mount brackets (wing fairing rib) in accordance with Drawing No. A200094 before accomplishing item III A of SB 600-23.

c. When the modification has been incorporated, the placard required by paragraph (a)above may be removed.

Amendment 39-1109 became effective to all known owners of Aerostar Model 600 and 601 airplanes upon receipt of individual copies mailed November 6, 1970 and to all other persons on November 16, 1970.

This Amendment 39-1270 becomes effective August 23, 1971.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A17WE](https://openairdocs.org/tcds/A17WE): Aerostar Aircraft Corporation; names 2 of 5 models: PA-60-601 (Aerostar 601), PA-60-600 (Aerostar 600)

## 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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