# AD 62-08-01: Fuel Pressure Gauge Drain Line

- Type: Airworthiness directive
- Status: Current
- Products: Twin Commander 680-F and 720
- Effective: April 10, 1962
- Published: April 10, 1962
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Registered aircraft: 12 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/28E637FFA97DA91386256A38005C695D.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/62-08-01

## The airworthiness directive

62-08-01 AERO COMMANDER: Amdt. 415 Part 507 Federal Register April 10, 1962. Applies to All Models With Serial Numbers 1 Through 1170, Except Serial Numbers 1133, 1153, 1156, 1162, Models 720, and Pressurized Versions of Model 680F.

Compliance required within the next 25 hours' time in service after the effective date of this directive.

It has been found that fuel and fuel fumes are released within the cockpit area behind the instrument panel, through the fuel pressure gage case vent as a result of gage diaphragm rupture. Accordingly, a fuel drain line shall be installed leading from the fuel pressure gage vent connection and routed overboard through the belly of the aircraft in accordance with Aero Commander Service Bulletin No. 78 dated March 16, 1962, or an FAA approved equivalent.

This directive effective April 10, 1962.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 2A4](https://openairdocs.org/tcds/2A4): Twin Commander Aircraft LLC; names 2 of 21 models: 680-F, 720

## 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: Aero Commander 12

Models with the most aircraft:

- [Aero Commander 680-F](https://openairdocs.org/model/aero-commander-680-f): 11 aircraft (airframe model)
- [Aero Commander 720](https://openairdocs.org/model/aero-commander-720): 1 aircraft (airframe model)

All 2 models: https://openairdocs.org/ad/62-08-01/models.md
Every aircraft: https://openairdocs.org/ad/62-08-01/aircraft.md

Its text cites no advisory circulars or STCs.

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