# AD 65-12-01: Main Land Gear Gland Nut

- Type: Airworthiness directive
- Status: Current
- Products: Kelowna Flightcraft R & D 340 and 440
- Effective: June 27, 1965
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- Amendment: 39-75
- Registered aircraft: 12 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5155E9D594E7E16A862569B20072D045.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/65-12-01

## The airworthiness directive

65-12-01 GENERAL DYNAMICS: Amdt. 39-75 Part 39 Federal Register May 28, 1965. Applies to Models 340 and 440 Series Aircraft.

Compliance required within the next 500 hours' time in service after the effective date of this AD unless already accomplished, and thereafter each time the main landing gear gland nut is reinstalled.

To prevent the loss of a main landing gear piston and axle assembly due to an improperly installed gland nut, inspect the main landing gear nut installation to assure that the gland nut is installed as follows:

  (a) Screw the gland nut, P/N 528062, onto the main landing gear outer cylinder, P/N 528402, until it is tight.

  (b) Unscrew the gland nut until the first tapped hole is opposite one of the milled slots in the cylinder.

  (c) Screw lock screw, P/N AN 501A-416-8, into the tapped hole so that the screw protrudes into the milled slot in the cylinder.

  (d) Screw set screw, P/N 500305-4, into an adjacent tapped hole in the gland nut andsafety the lock screw and set screw with a lockwire. (General Dynamics/Convair Models 340 and 440 Maintenance Manuals cover this same subject.)

This directive effective June 27, 1965.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 6A6](https://openairdocs.org/tcds/6A6): Kelowna Flightcraft R & D Ltd.; names 2 of 6 models: 340, 440

## 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: 12 (12 by airframe model, 0 by engine model)
- Makers: Convair 12

Models with the most aircraft:

- [Convair 340](https://openairdocs.org/model/convair-340): 7 aircraft (airframe model)
- [Convair 440](https://openairdocs.org/model/convair-440): 5 aircraft (airframe model)

All 2 models: https://openairdocs.org/ad/65-12-01/models.md
Every aircraft: https://openairdocs.org/ad/65-12-01/aircraft.md

Its text cites no advisory circulars or STCs.

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