# SDR CALA2016120501016

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 5, 2016
- Submitted: December 6, 2016
- Operation: Air carrier
- Aircraft: [N38955](https://openairdocs.org/aircraft/N38955), registered now
- Make and model: Boeing 787-9
- Registry model: [Boeing 787-9](https://openairdocs.org/model/boeing-787-9) (OpenAirDocs)
- Aircraft serial: 37814
- Aircraft time: 7,147 hours, 733 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Duct
- Part number: 626Z26611081
- Condition: Damaged
- Location: E&E Bay
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: J, B, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2016120501016

## Discrepancy

LOSS OF CABIN PRESSURIZATION CLIMBING THRU 28,000 FEET FOUND DUCTING JUST FWD OF AFT E&E COOLING OVERBOARD VALVE IN AFT PIT DAMAGED.  REMOVED AND REPLACED AFT E&E COOLING VALVE AND DUCT REF DMC-B787-A-21-27-48-00A-720A-A PERFORMED CMCF GROUND TEST "PASSED" GROUND TEST PASSED. PRESSURIZED AIRCRAFT ON GROUND TO 3 DELTA P. NO MESSAGES. PRESSURIZED NORMAL.

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