AD 2003-11-07

Applies to

All Model 1121, 1121A, 1121B, 1123, 1124, and 1124A series airplanes; certificated in any category.

The FAA's summary

This amendment adopts a new airworthiness directive (AD), applicable to all Israel Aircraft Industries, Ltd. Model 1121, 1121A, 1121B, 1123, 1124, and 1124A series airplanes, that requires removing the existing oxygen shutoff valve and installing a new oxygen shutoff valve. This action is necessary to prevent rapid adiabatic compression within the oxygen line between the oxygen shutoff valve and the pressure regulator due to a shutoff valve that can be opened quickly, which could result in overheating of the oxygen system, and consequent fire in the cockpit. This action is intended to address the identified unsafe condition.

Filed under

The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.

Official sources

• The Federal Register document · document 03-12963, the legal text
• FAA Dynamic Regulatory System (DRS) · search 2003-11-07 for its current status and any corrections