SDR HNAA2026012900094

Service difficulty report · Valve · Emb EMB145LR

Difficulty date: January 28, 2026
Submitted: January 29, 2026
Operation: Air carrier
Aircraft: N637AE
Make and model: Emb EMB145LR
Aircraft serial: 145170
Aircraft time: 55,429 hours, 53,562 cycles
System (JASC): 2150 · Cabin Cooling System
Part: Valve
Part number: 8166041
Part serial: 20004110459
Condition: Faulted
Location: Nr 1 A/C Pack
Part time: 39,550 hours, 36,918 cycles
Stage of operation: IN
How discovered: V
Nature of condition: J
Precautionary procedure: K

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

What was found

RAM AIR VALVE FAIL EICAS MESSAGE INFLIGHT. MESSAGE CLEARED DURING TAXI. NO RELEVANT CMC MESSAGES NOTED. PERFORMED OPS CHECK OF RAM AIR VALVES IRT AMM 21-25-01. OPS GOOD. T/S PER FIM TASK 21-25-00-810-801-A, BLOCK 1, 2, 3, 4, 22. R/R PACK 1 VALVE IAW AMM 21-51-01. OPS CHECK GOOD GOOD FOR SERVICE. LEAK CHECK GOOD.

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