ACS — Pack Fail - Dual
This is a work in progress
Photo: Pack fail indications, PAS, p. 1-20
Click photo for a larger image
- Dual Pack Failure: Cabin altitude will climb with both packs failed and should reach 8000 feet in approximately 3 minutes at normal cruise altitudes.
- Altitude . . . Coordinate immediate descent
- Pressurization . . . Verify cabin climb rate
- ECS Packs (Left and Right) . . . OFF
- Affected ECS Pack Control / Auto Temp SSPCs . . . PULL and RESET
- ECS Packs (Left and Right) . . . ON (one at a time)
- If one pack remains inoperative:
- Refer to 03-01-10, Pack Failure - Single.
- If both packs are inoperative:
- ECS Packs (Left and Right). . . OFF
- RAM AIR (OHPTS / ECS) . . . Select
- CPC FAULT / MANUAL Switch . . . MANUAL
- CABIN ALT Knob . . . Climb (Full Open)
- Altitude . . . Descend to 10,000 feet or minimum enroute altitude (if higher)
- Airplane . . . Land as soon as practicable
CABIN ALTITUDE WILL CLIMB WITH BOTH PACKS SECURED. DO NOT DELAY DESCENT.
PACK CTRLR R: SSPC 3609
PACK OFF R: SSPC 2122
PACK ON R: SSPC 2124
PACK CTRLR L: SSPC 3608
PACK OFF L: SSPC 2121
PACK ON L: SSPC 2123
AUTO TEMP CTL AFT: SSPC 2106
AUTO TEMP CTL FWD: SSPC 2107
Continued flight with the TROV full open prevents cabin overheat conditions.
Gulfstream GVII-G500 Airplane Flight Manual, Revision 1, August 31, 2018
Gulstream GVII-G500 Production Aircraft Systems, Revision 1, Oct 1, 2018