Thu, Jun 17, 2010
Fuel Pumps May Cause Engine Flooding, Fuel Leaks Due To
Overpressure
The FAA has issued a Special
Airworthiness Information Bulletin (SAIB) for certain part number
fuel pumps installed on, but not limited to, Rotax 912 series
aircraft engines. The pumps cause a possible unsafe condition on
special light sport category aircraft (SLSA), experimental light
sport aircraft (ELSA), and experimental amateur-built aircraft with
the engines installed.
In some cases, if the input pressure to the mechanical fuel pump
is high (e.g., due to an electric fuel pump upstream), the output
pressure from the mechanical fuel pump could be excessive. This
high fuel pressure may cause the engine to malfunction from
flooding and/or cause fuel leakage. The fuel pumps affected by this
issue are 892230, 892232, 892540 (standard version), and 892235,
892236, 892545 (version including flexible line). Pumps with part
numbers 892542 and 892546 are not affected.
The engines likely to be affected by this issue are:
- 912A S/Ns 4,410.684 through 4,410.727
- 912F S/Ns 4,412.913 through S/Ns 4,412.925
- 912S S/Ns 4,923.282 through 4,923.461
- 912UL S/Ns 4,407.646 through 4,408.361
- 912ULS S/Ns 5,646.084 through 5,648.164
- 912ULSFR S/Ns 4,430.267 through 4,430.500 and S/Ns 6,374.028
through 6,374.054
Rotax 912ULS
The FAA says ff your aircraft is affected by this issue,
replacement of the fuel pump part numbers listed above is
recommended following ROTAX Service Bulletins SB-912-053
and SB-912-053UL.
The FAA says it is taking airworthiness directive action to
address this issue on the type-certificated aircraft and
engines.
More News
Aero Linx: Model Aeronautical Association of Australia MAAA clubs are about fun flying, camaraderie and community. For over 75 years, the MAAA has been Australia’s largest fl>[...]
Touchdown Zone Lighting Two rows of transverse light bars located symmetrically about the runway centerline normally at 100 foot intervals. The basic system extends 3,000 feet alon>[...]
“Discovery and innovation are central to our mission at Virgin Galactic. We’re excited to build on our successful record of facilitating scientific experiments in subor>[...]
How To Get A Story On Aero-TV News/Feature Programming How do I submit a story idea or lead to Aero-TV? If you would like to submit a story idea or lead, please contact Jim Campbel>[...]
Student Pilot Reported That During Rotation, “All Of A Sudden The Back Of The Plane Kicked To The Right..." Analysis: The student pilot reported that during rotation, “>[...]