# SDR ASMF200503012

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 13, 2005
- Submitted: March 16, 2005
- Operation: Air carrier
- Aircraft: N904AM
- Make and model: Boeing 737*
- Aircraft serial: 28262
- Aircraft time: 1,356 hours, 939 cycles
- Engine: Ge CFM56*
- System (JASC): [3600 · Pneumatic System](https://openairdocs.org/jasc/3600)
- Part: Pneumatic System
- Condition: Malfunctioned
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASMF200503012

## Discrepancy

AIRCRAFT RETURNED TO PLATFORM DURING PUSH BACK, THE PNEUMATIC WAS NOT ENOUGH TO START THE ENGINES. THE ENGINES WERE STARTED WITH EXTERNAL PNEUMATIC PLANT IAW MM 49-50-00, TESTED CORRECT AND THE PNEUMATIC AUXILIARY POWER UNIT WAS DEFERRED IAW MEL 49-7. DURING TRANSIT SERVICE, OPERATIONAL TEST WAS PERFORMED TO PNEUMATIC AUXILIARY POWER UNIT WAS PERFORMED IAW MM 49-11-00, TESTED CORRECT, DEFERRED REPORT WAS CLOSED.

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