# AD 51-26-02: Automatic Pilots

- Type: Airworthiness directive
- Status: Current
- Products: Lear Automatic Pilots
- Superseded by: Nothing supersedes this AD
- Product type: Appliance
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/00C4470EFBF68E7A86256A3300550298.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/51-26-02

## The airworthiness directive

51-26-02 LEAR: Applies to All L-2 Series Automatic Pilots.

Compliance required at next 100-hour airplane inspection, but not later than January 1, 1952.

Inspect all L-2 Series autopilot servos to determine whether servo clutches have green dot on the shaft at the output end of servo capstan shaft, or a green dot on or below the servo nameplate, or a yellow dot on the clutch housing. All clutches not so marked must be replaced. Replacement clutches will be supplied by Lear upon request.

(Lear Service Bulletin No. L-2-16 dated October 26, 1951, covers this same subject.)

This applies only to Servo Models 121C, 121D, 121F, 121G, 121H, 121J, manufactured prior to March 1, 1952. Reference Lear Service Bulletin No. L-2-44, dated May 24, 1954.

## 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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