# SDR ASAA2021101836372

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 18, 2021
- Submitted: October 26, 2021
- Operation: Air carrier
- Aircraft: [N468AS](https://openairdocs.org/aircraft/N468AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41735
- Aircraft time: 27,207 hours, 8,736 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Acm
- Part number: 22064002
- Part serial: 10719
- Condition: Faulty
- Location: Right Ecs Bay
- Part time: 27,218 hours, 8,741 cycles
- 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/ASAA2021101836372

## Discrepancy

R PACK LIGHT FAULT. GROUNDED - YES. REMOVED AND REPLACED R/H AIR CYCLE MACHINE REF B737-900 AMM 21-51-04-400-802-002. COMPLETED UP TO 3.(I) AIR CYCLE MACHINE TEST. MEL MAINTENANCE PROCEDURE REVERSED FOR ACTIVATION OF THE PACK AIRFLOW SHUTOFF VAVLE, ONLY. D492 ELECTRICAL CONNECTOR INSTALLED. COMPLETED R/H ACM INSTALLATION TEST, LEAK & OPS CHECKED GOOD. MEL 21-1G CLEARED, ALL MAINT PROCEDURES REVERESED. SEMAC JOEY NOTIFIED. FWD CARGO HEAT DUCT VALVE OPENED AND SAFTIED. PLACARDS REMOVED.

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