# SDR CALA2022072701891

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 27, 2022
- Submitted: July 27, 2022
- Operation: Air carrier
- Aircraft: [N27908](https://openairdocs.org/aircraft/N27908), registered now
- Make and model: Boeing 787-8
- Registry model: [Boeing 787-8](https://openairdocs.org/model/boeing-787-8) (OpenAirDocs)
- Aircraft serial: 36400
- Aircraft time: 35,610 hours, 4,305 cycles
- System (JASC): [5210 · Passenger/Crew Doors](https://openairdocs.org/jasc/5210)
- Part: Epas
- Part number: 410046545
- Part serial: 64071A1
- Condition: Fault Message
- Location: 4l Door
- Stage of operation: UK
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2022072701891

## Discrepancy

DR EPAS SENSORS 4L MESSAGE RETURNED. WILL NOT CLEAR WITH C/B RESETS OR GRND TESTS. SUSPECT EPAS MODULE(DR ASSIST BOTTLE)  WILL REQUIRE REPLACEMENT. ADDED PIC SQUIB PN IF NEEDED 48000306-1 NIS IAD. ADD EMP:221991 REMOVED AND REPLACED L4 DOOR ASSIST EPAS BOTTLE PER AMM IPC REFERENCE # 52-11-22 52-11-22-00A-720A-A. PERFORMED SYSTEM TEST OPS CHK OK. ROTABLE PARTS CHANGE WAS INDICATED - TT # 1832917  SN OFF 0711 C/W RII REQUIREMENTS - VERIFIED PART EFFECTIVITY, WITNESSED TORQUE, SAFETY & SECURITY & SYSTEM CHECKS GOOD. BOTTLE, DOOR AS  OFF 78-5211-9-0009 4071 ON 78-5211-9-0009 4491

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