# SDR UIEA2022050300429

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 3, 2022
- Submitted: May 6, 2022
- Operation: Air carrier
- Aircraft: [N477MC](https://openairdocs.org/aircraft/N477MC), registered now
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 29255
- Aircraft time: 94,688 hours, 16,677 cycles
- System (JASC): [3620 · Pneumatic Indicating System](https://openairdocs.org/jasc/3620)
- Part: Switch
- Part number: 211C117222
- Part serial: W51257
- Condition: Fault Message
- Stage of operation: CR
- How discovered: V
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2022050300429

## Discrepancy

BLEED 2 EICAS MESSAGE(<P>CMC # 36227 PER FIM TASK # 36-11/940. REMOVED AND REPLACED #2 ENG BLEED AIR OVERPRESSURE SWITCH PER AMM 36-21-03/401. THEN OPERATIONAL TEST WITH ENG RAN, OK PER AMM 71-00-00/501. NO MSG FOUND. A/C OK FOR SVC.<SPAN STYLE="WHITE-SPACE: PRE;"> </SPAN>CMC # 36221. PER FIM TASK # 3611/940. REMOVED AND REPLACED #2 ENG PRV PER AMM 36-11-19/401. THEN OPERATIONAL TEST WITH ENG RAN, OK PER AMM 71-00-00/501. NO EXISTING FAULT MSG FOUND. A/C OK FOR SVC.<SPAN STYLE="WHITE-SPACE: PRE;"> </SPAN></P>)

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