# SDR ASAA0540555

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 18, 2005
- Submitted: January 13, 2006
- Operation: Air carrier
- Aircraft: [N706AS](https://openairdocs.org/aircraft/N706AS), registered now
- Make and model: Boeing 737490
- Aircraft serial: 28894
- System (JASC): [3260 · Landing Gear Position and Warning](https://openairdocs.org/jasc/3260)
- Part: Switch
- Condition: Failed
- Location: Ground Safety
- Stage of operation: CR
- How discovered: O
- Nature of condition: G
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA0540555

## Discrepancy

PHX - AT 31,000 FEET AFTER 90 MINUTES IN CRUISE, PRESSURIZATION FAILED.  AUTO THROTTLE AND TRANSPONDER FAILED AT SAME TIME.  AUTO SPEED BRAKE WARNING LIGHT ILLUMINATED ALSO.  REPLACED GROUND SAFETY SWITCH S-105, PER AMM 32-09-01.  ALSO REFERENCE EA 3209-01001 FOR GROUND SAFETY SWITCH CLARIFICATION.  SYSTEM OPS TEST NORMAL IAW AMM 32-09-01 PAGES 501-505.  (M)

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