Airworthiness Directive 95-22457
one-timeAirworthiness Directives; Learjet Model 35, 35A, 36, 36A, 55, 55B, and 55C Airplanes
What this AD requires
This amendment adopts a new airworthiness directive (AD), applicable to certain Learjet Model 35, 35A, 36, 36A, 55, 55B, and 55C airplanes, that requires installation of a placard on the instrument panel in the cockpit to advise the flightcrew that the Omega navigation system may be inoperative at certain engine speeds. This amendment is prompted by reports of loss of certain navigation signals during extended over water operation. The actions specified by this AD are intended to prevent excessive deviation from the intended flight path due to loss of navigation signals, which could result in a potentially low-fuel condition or a traffic conflict.
Which aircraft AD 95-22457 applies to
Whether AD 95-22457 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.
How AD compliance is recorded
A valid compliance record (14 CFR 43.9) states:
Tailplate reads a tail number’s logbooks and matches every applicable AD — including this one — to its compliance evidence, with recurring next-due dates computed.
Look up a tail number →Read the full directive (Federal Register)Applicability is derived from the FAA directive corpus and is advisory, not a legal airworthiness determination. Compliance is established only from an aircraft’s actual records.