# AD 67-22-01: Main Landing Gear

- Type: Airworthiness directive
- Status: Current
- Products: Twin Commander 500-A, 500-B, 560-F, 680-F, 680-FL, 680-FL(P) and 680-F(P)
- Effective: August 28, 1967
- Published: July 22, 1967
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Registered aircraft: 140 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/AD87917D678F4E8F86256A38005D4AE3.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/67-22-01

## The airworthiness directive

67-22-01 AERO COMMANDER: Amdt. No. 39-446, Part 39, Federal Register July 22, 1967. Applies to Models 500A, 500B, 560F, 680F, 680F (Pressurized), 680 FL, and 680 FL(P) Airplanes, Serial Numbers 871, 875, and 893 through 1535 except 1496, 1515, 1517, 1519, 1527, 1531, and 1532, and 1534.

Compliance required within the next 25 hours' time in service after the effective date of this AD, unless the modification has already been accomplished in accordance with Aero Commander Service Bulletin 83A dated June 25, 1965.

To prevent the main landing gear upper retaining bearing from rotating, accomplish the following:

Modify the main landing gear in accordance with Aero Commander Service Bulletin 83A dated June 25, 1965, or an equivalent approved by the Director, Southwest Region, Federal Aviation Administration. Stamp the letter "B" after the design number on each landing gear data plate after the modification is made. Modification in accordance herewith obviates modification in accordance with Amendment 676 (29 F.R. 558), AD 64-02-01.

This amendment effective August 28, 1967.

## Affected data sheets (2) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 2A4](https://openairdocs.org/tcds/2A4): Twin Commander Aircraft LLC; names 3 of 21 models: 680-F, 560-F, 680-FL
- [TCDS 6A1](https://openairdocs.org/tcds/6A1): Twin Commander Aircraft LLC; names 2 of 9 models: 500A, 500B

## 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: 140 (140 by airframe model, 0 by engine model)
- Makers: Aero Commander 140

Models with the most aircraft:

- [Aero Commander 500-B](https://openairdocs.org/model/aero-commander-500-b): 85 aircraft (airframe model)
- [Aero Commander 500-A](https://openairdocs.org/model/aero-commander-500-a): 23 aircraft (airframe model)
- [Aero Commander 680-F](https://openairdocs.org/model/aero-commander-680-f): 11 aircraft (airframe model)
- [Aero Commander 680FL](https://openairdocs.org/model/aero-commander-680fl): 10 aircraft (airframe model)
- [Aero Commander 560-F](https://openairdocs.org/model/aero-commander-560-f): 6 aircraft (airframe model)
- [Aero Commander 680FL P](https://openairdocs.org/model/aero-commander-680fl-p): 5 aircraft (airframe model)

All 6 models: https://openairdocs.org/ad/67-22-01/models.md
Every aircraft: https://openairdocs.org/ad/67-22-01/aircraft.md

Its text cites no advisory circulars or STCs.

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