Airworthiness Directive 2009-08-07
one-timeAirworthiness Directives; Honeywell International Inc. ALF502L-2 and ALF502L-2C Turbofan Engines
What this AD requires
The FAA is adopting a new airworthiness directive (AD) for Honeywell International Inc. ALF502L-2 and ALF502L-2C turbofan engines with certain high-pressure compressor (HPC) first stage discs installed. This AD requires performing a dimensional inspection to determine if excessive disc balance material was removed and a magnetic particle inspection if the disc passes the dimensional inspection. This AD results from reports of discs found with excessive material removed from the balancing locations of the disc. We are issuing this AD to prevent the discs from fracturing before reaching the currently published life limit. A disc fracture could result in an uncontained failure of the disc and damage to the airplane.
Which aircraft AD 2009-08-07 applies to
Applies only when a high-pressure compressor (HPC) first stage disc with one of the listed part numbers is installed. These engines are installed on, but not limited to, Bombardier CL-600-1A11 airplanes.
Whether AD 2009-08-07 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.