- Difficulty date
- April 5, 2019
- Submitted
- April 8, 2019
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 35693
- Aircraft time
- 39,026 hours, 11,625 cycles
- Part
- Knob
- Condition
- Defective
- Location
- Temp Module
- Component
- Module
- Component part number
- 693732478
- Stage of operation
- NR
- How discovered
- O
- 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
AIR TEMPERATURE SOURCE SELECTOR KNOB WON'T PROPERLY SEAT AT VARIOUS ZONE SELECTIONS. GROUNDED - YES. TROUBLESHOT TO DEFECTIVE TEMP SOURCE SELECT SWITCH (S-1) P5-17 CABIN TEMP PANEL. REMOVED & REPLACED P5-17 TEMP CONTROL MODULE REF B737-800 AMM 21-61-15, GROUND FUNCTIONAL CK NML REF AMM 21-61-00-700-807-002 AND AMM 21-61-00-700-806-002.