Gulfstream Releases Three Service Bulletins for the G150

September 2015

Gulfstream has released three Service Bulletins (SB) for the G150 aircraft, and the company recommends that all three be taken care of at the same time.

• SB 150-27-169 is to replace the flap and slat power drive units (PDUs) and ballscrew actuators. This SB affects serial numbers 201 through 313 and was issued because the current configuration has not demonstrated the expected reliability. The recommended compliance period is within 24 months of the release date of the SB (August 28, 2015).

• Service Bulletin 150-27-181 is to replace the flap/slat electronic control unit (FSECU). This SB affects serial numbers 201 through 315 and was issued because operators say in certain actuator positions, the FSECU flap system protection circuit didn't work. Continuing to apply power in this situation could degrade or damage the flap PDU motor drive components. The recommended compliance period is within 24 months of the release date of the SB (August 28, 2015).

• Service Bulletin 150-27-180 is to upgrade the Flap/Slat flexible shaft. This SB affects serial numbers 201 through 317 and was issued because a new configuration for the flap and slat flexible shaft assembly is available. The new configuration uses Aeroshell 33 grease, incorporating MIL-PRF-23827, Type I (Lithium based), and it replaces MIL-PRF-23827, Type II (clay based).

All three Service Bulletins are part of a Managed Program thru Gulfstream. Operators will need to contact Gulfstream to have the parts allocated and ordered for their aircraft. Please refer to the Service Bulletins for compliance times and warranty provisions.

Because Duncan Aviation is a Gulfstream Authorized Warranty Facility, all three of our main sites (Lincoln, Nebraska; Battle Creek, Michigan and Provo, Utah) are approved to perform the Service Bulletins under Gulfstream warranty as listed.

Please contact the following representatives to schedule your aircraft:

Brian Andrews, Brad Lennemann