# AD 78-24-04: Flexible Fuel Line Installation

- Type: Airworthiness directive
- Status: Current
- Products: Israel Aircraft Industries 1121, 1121A and 1121B
- Effective: December 20, 1978
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- Amendment: 39-3351
- Registered aircraft: 2 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/BB1317EC1EEAC53F862569AC006B27F1.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/78-24-04

## The airworthiness directive

78-24-04 ISRAEL AIRCRAFT INDUSTRIES (IAI): Amendment 39-3351. Applies to Model 1121, 1121A, and 1121B airplanes, Serial Numbers through 150 except 107 and equipped with Ni-Cad battery overtemperature warning or combination overtemperature warning and indicator systems, which rely on a common single sensor per battery.

Compliance required within the next 150 hours time in service after the effective date of this AD, unless already accomplished.

To reduce the possibility of damage to the flexible fuel lines and potential fire in the event of an uncontrolled Ni-Cad battery thermal runaway, modify the flexible fuel line installation and after modification perform inspections and leak tests in accordance with Commodore Jet Service Bulletin No. CJ-16, dated May 31, 1977, or equivalent, approved by the Chief, Aircraft Certification Staff, FAA, Europe, Africa, and Middle East Region, c/o American Embassy, APO NY 09667.

This amendment becomes effective December 20, 1978.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A2SW](https://openairdocs.org/tcds/A2SW): Israel Aircraft Industries Ltd.; names 3 of 6 models: 1121, 1121A, 1121B

## 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: 2 (2 by airframe model, 0 by engine model)
- Makers: Aero Commander 2

Models with the most aircraft:

- [Aero Commander 1121](https://openairdocs.org/model/aero-commander-1121): 1 aircraft (airframe model)
- [Aero Commander 1121A](https://openairdocs.org/model/aero-commander-1121a): 1 aircraft (airframe model)

All 2 models: https://openairdocs.org/ad/78-24-04/models.md
Every aircraft: https://openairdocs.org/ad/78-24-04/aircraft.md

Its text cites no advisory circulars or STCs.

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