# AD 70-25-09: Microphone Jack Connection

- Type: Airworthiness directive
- Status: Current
- Products: Aerostar PA-60-600 (Aerostar 600) and PA-60-601 (Aerostar 601)
- Effective: December 18, 1970
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Amendment: 39-1127
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8A981AB31738A3128625699700582E92.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/70-25-09

## The airworthiness directive

70-25-09 AEROSTAR: Amdt. 39-1127. Applies to Model 601, S/N's 61-001 through 61- 0070, and to all Model 600 airplanes equipped with the Aerostar Model 601 oxygen system.

Compliance required within the next 10 hours time in service after the effective date of this AD unless already accomplished.

To prevent possible short circuiting of the microphone jack connection by contact with the oxygen outlet receptacle due to their proximity to each other, accomplish the relocation specified in Aerostar Aircraft Corporation Service Bulletin No. S.B. 600-26 dated November 6, 1970, or later FAA-approved revisions, or other equivalent modification approved by the Chief, Engineering and Manufacturing Branch, Southwest Region, FAA.

This amendment becomes effective to all known owners of Aerostar Model 601 airplanes and Model 600 airplanes equipped with the Aerostar Model 601 oxygen system upon receipt of individual copies mailed December 8, 1970 and to all other persons on December18, 1970.

## 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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