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APU — Inflight Operation Alternate Electrical Power Source

G500 Abnormal Procedures

This is a work in progress


AFM Procedure

[AFM, §03-03-10]

Corrective Action

  1. MAIN BATTERIES (Left and Right) . . . ON

  2. APU MASTER . . . ON
  3. NOTE

    During APU start the AHRS 1-2 DG Mode (caution) CAS Message may display momentarily.

  4. APU Ready Light. . . Illuminated

  5. APU . . . START

  6. When the APU reaches operating speed (100% RPM):

    1. APU GEN . . . Verify On

    2. Electrical Load . . . Monitor

  7. If APU Generator load exceeds 55%:

    1. Altitude . . . Descend to FL350 or below

  8. If in-flight shutdown of the APU is necessary:

    1. APU . . . STOP

    2. APU MASTER . . . OFF (RPM less than 70%)

References

Gulfstream GVII-G500 Airplane Flight Manual, Revision 1, August 31, 2018

Revision: 2019-04-18
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