SDR DALA2019030801543

Service difficulty report · Bolt · Boeing 737832

Difficulty date: March 7, 2019
Submitted: March 9, 2019
Operation: Air carrier
Aircraft: N384DA
Make and model: Boeing 737832
Aircraft serial: 30347
Aircraft time: 62,938 hours, 24,767 cycles
System (JASC): 8012 · Engine Start Valves/Controls
Part: Bolt
Condition: Loose
Location: Ground Start
Stage of operation: CR
How discovered: O
Nature of condition: J
Precautionary procedure: B, A

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

What was found

SHIP 3714 - DIV/PRES - DURING FLIGHT AT FL 340 CABIN ALTITUDE LIGHT ILLUMINATED AND WARNING HORN CAME ON. AIRCRAFT DESCENDED AND PASSENGER MASKS DEPLOYED. AIRCRAFT DIVERTED TO MEM. CORRECTIVE ACTION: MAINTENANCE RETOURQUED LOOSE GROUND START CONNECTION BOLTS AND FOUND SEVERAL BELLY DRAIN VALVES STUCK OPEN. CLEANED ALL VALVES. OPS CHECK GOOD AND PRESSURIZATION LEAK CHECK OK. AIRCRAFT RETURNED TO SERVICE.