SDR UIEA2020052691085

Service difficulty report · Sensor · Boeing 767383

Difficulty date: May 19, 2020
Submitted: May 26, 2020
Operation: Air carrier
Aircraft: N1511A
Make and model: Boeing 767383
Aircraft serial: 24318
Aircraft time: 100,995 hours, 16,548 cycles
System (JASC): 2150 · Cabin Cooling System
Part: Sensor
Condition: Failed
Location: Lt A/C Pack
Stage of operation: TX
How discovered: O
Nature of condition: J
Precautionary procedure: O

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

What was found

L PACK OFF, PLACED ON MDDR 128564 PER MEL 21-51-01-01, CAT 'C'. REMOVED AND REPLACED THE LT PACK FLOW CONTROL VALVE IAW AMM 21-51-01. OPS CHECKED L/H PACK SEVERAL TIMES. COULD NOT DUPLICATE PROBLEM. LEAK CHECKS AND OPS CHECKS GOOD. WHILE CHANGING THE LT PACK FLOW CONTROL AND SHUTOFF VALVE FOUND LT PACK FLOW SENSOR FALLING APART. REMOVED AND REPLACED THE LT PACK FLOW SENSOR IAW AMM 21-52-03 OPS AND LEAK CHECKED GOOD.