SDR ASAA2021012333924

Service difficulty report · Indicator · Boeing 737890

Difficulty date: January 23, 2021
Submitted: January 26, 2021
Operation: Air carrier
Aircraft: N506AS
Make and model: Boeing 737890
Aircraft serial: 35690
Aircraft time: 46,064 hours, 14,008 cycles
System (JASC): 2210 · Autopilot System
Part: Indicator
Condition: Stuck
Location: Mach
Stage of operation: NR
How discovered: 9
Nature of condition: O
Precautionary procedure: O

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

What was found

FGCP IAS/MACH STUCK AT 155 KTS. GROUNDED-YES. TASK CARD COMPLIED WITH DURING INITIAL EVALUATION FOUND IAS/MACH SELECTOR KNOB LOOSE. ADJUSTED, CLEANED, AND RE-TIGHTENED SELECTOR KNOB AS REQUIRED, REF B737-800 AMM 22-11-34. AS A PRECAUTION, PERFORMED MCP TEST, REF B737-800 FIM 22-11 TASK 803. OPERATIONS NORMAL. ACCOMPLISHED AMM 22-00-01-730-801.