# SDR ASAA2023110245984

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 2, 2023
- Submitted: November 3, 2023
- Operation: Air carrier
- Aircraft: [N972AK](https://openairdocs.org/aircraft/N972AK), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 43389
- Aircraft time: 6,529 hours, 1,863 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: IN
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023110245984

## Discrepancy

WHILE PERFORMING TSR715194 UPON ENGINE IDLE RUNT TEST ON ENG. 1 PRESENT LEG FAULT MAINT. MSG 36-10170 "IASC-L (BLEED) HAS NO ENGINE-1 PS3 AND T3 DATA ON MDS-DPC GP 2 BUS" CORRELATED TO SMT BLD CTRL CARD L. SHOWS INTERMITTENT. GROUNDED - YES. PERFORMED IFIM TASK 36-10-00-810-809 CONFIRMED TO BE INTERMITTENT. GROUND VERIFICATION PASS SEAMC SCOTT NOTIFIED.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.