Service difficulty report · Lanyard · Boeing 737890

Difficulty date
February 2, 2012
Submitted
February 6, 2012
Operation
Air carrier
Aircraft
N536AS
Make and model
Boeing 737890
Aircraft serial
35203
Aircraft time
15 hours, 14 cycles
Part
Lanyard
Part number
PLT1MXMR
Condition
Out Of Position
Location
Cabin
Stage of operation
NR
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

FORWARD SUPPLY DUCT UNABLE TO CONTROL IN AUTO. "DID NOT" ADJUST CONTROLLER SPIKED TO 60 DEG C. RAN PACKS AND VERIFIED TEMP CONTROL ISSUES W/ FWD CABIN TEMP. FOUND NO AIRFLOW INTO FWD CABIN SENSOR AIR INLET GRILLE AND NO SOUND FROM FAN. LOWERED ROW 1 DEF PSU AND VISUALLY INSPECTED FWD CABIN TEMP SENSOR FAN AND FOUND FWD CABIN TEMP SENSOR PANEL SAFETY LANYARD INTERMITTENTLY TOUCHING FAN BLADES STOPPING FAN AND NO AIR FLOW ACROSS CABIN SENSORS. UPON MOVING SAFETY LANYARD FAN FREELY RAN NORMAL. REPOSITIONED LANYARD AWAY FROM FAN. RAN PACKS W/DIFFERENT TEMP SETTINGS, OPS NML. TEMP CNTLRS BITE TEST AND CABIN TEMP CNTL AND IND OPERATIONAL TEST NML REF. 21 61 00.