# AD 64-03-04: Nose Landing Gear Steering Control Unit

- Type: Airworthiness directive
- Status: Current
- Products: Industrie Aeronautiche e Meccaniche P.166
- Effective: February 20, 1964
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/3DB90B35CF357D3186256A380060DC05.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/64-03-04

## The airworthiness directive

64-03-04 PIAGGIO: Amdt. 675 Part 507 Federal Register January 21, 1964. Applies to All Model P.166 Aircraft Equipped With Magnaghi Modification 22027 or Modification 2-22027 Shock Absorbers.

Compliance required within the next 50 hours' time in service after the effective date of this AD.

Fatigue cracks have developed inservice on nose landing gear steering control unit P/N's 4105.26 and 4105.31. To correct this condition, replace flanges in nose undercarriage unit as follows:

  (a) On aircraft equipped with Modification 2-22027 shock absorber, replace old flange P/N 4105.26 with new flange P/N 4105.26A.

  (b) On aircraft equipped with Modification 22027 shock absorber, replace old flange P/N 4105.31 with new flange P/N 4105.31A.

  (c) Accomplish replacement as provided for in Piaggio Service Bulletin No. 166-35 dated July 8, 1963.

(Piaggio Service Bulletin No. 166-35 dated July 8, 1963, covers the same subject.)

This directive effective February 20,1964.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 7A4](https://openairdocs.org/tcds/7A4): Industrie Aeronautiche e Meccaniche; names 1 of 4 models: P.166

## 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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