# SDR DALA2021041302176

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 9, 2021
- Submitted: April 13, 2021
- Operation: Air carrier
- Aircraft: [N695DL](https://openairdocs.org/aircraft/N695DL), registered now
- Make and model: Boeing 757232
- Aircraft serial: 29727
- Aircraft time: 74,500 hours, 28,462 cycles
- System (JASC): [2213 · Flight Controller](https://openairdocs.org/jasc/2213)
- Part: Autopilot Sys
- Condition: Failed
- Location: Cockpit
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2021041302176

## Discrepancy

SHIP 695 CRUSING AT FL 380 SAW A MOMENTARY PUFF OF SMOKE (5 SEC) BEHIND AUTOPILOT SWITCHS ON MCP. SIMULTANEOUSLY ALTITUDE WINDOW CHANGED TO FL 35.5. AIRPLANE REMAINED LEVEL. ALL LIGHTS ON MCP AT1/2 BRIGHTNESS. NO.ODOR. CORECTIVE ACTION: R/R MCP REF B757 AMM 22-11. VERIFIED ALL SWITCH CONFIG SAME AS REMOVED. PERFORMED TEST 04 REF B757 AMM 22-00-02/201. TEST SATISFACTORY.

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