SDR DALA2021041302176

Service difficulty report · Autopilot Sys · Boeing 757232

Difficulty date: April 9, 2021
Submitted: April 13, 2021
Operation: Air carrier
Aircraft: N695DL
Make and model: Boeing 757232
Aircraft serial: 29727
Aircraft time: 74,500 hours, 28,462 cycles
System (JASC): 2213 · Flight Controller
Part: Autopilot Sys
Condition: Failed
Location: Cockpit
Stage of operation: IN
How discovered: O
Nature of condition: O
Precautionary procedure: K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

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.