# SDR ASAA2023090444943

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 4, 2023
- Submitted: September 7, 2023
- Operation: Air carrier
- Aircraft: [N453AS](https://openairdocs.org/aircraft/N453AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36354
- Aircraft time: 36,110 hours, 11,371 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: TX
- 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/ASAA2023090444943

## Discrepancy

#1 ENG PACK LIGHT ILLUMINATED WHILE TAXING OUT ON RECALL. GROUNDED - YES. (RESOLVED ON W/O: 1968004 TASKCARD: N/R-00005 ) ACCOMPLISHED PZTC BITE PROCEDURE REF. FIM 21-62 TASK 801. NO FAULTS ACTIVE OR IN HISTORY. PACK/ZONE TEMPERATURE CONTROLLER BITE TEST NORMAL REF AMM 21-61-00-700-806-002.NO HISTORY FOR 90 DAYS. NO MAINTENANCE PROCEDURE TO REVERSE. REMOVED PLCARDS. THIS CLEARS MEL 21-32B, C/N 04059453. ETOPS GROUND VERIFICATION SUCCESSFUL.REMOVED PLACARDS.SEAMC SCOTT NOTIFIED.

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