SDR UIEA2020021100226

Service difficulty report · Control Unit · Boeing 76731K

Difficulty date: February 9, 2020
Submitted: February 11, 2020
Operation: Air carrier
Aircraft: N1489A
Make and model: Boeing 76731K
Aircraft serial: 27206
Aircraft time: 106,539 hours, 20,942 cycles
System (JASC): 3510 · Crew Oxygen System
Part: Control Unit
Part number: 21656
Part serial: 00104
Condition: Failed
Location: Crew Oxygen
Stage of operation: NR
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

CREW O2 EICAS PRESSURE INDICATION INOP (CREW OXYGEN SYSTEM, PRESSURE INDICATION (EICAS))(<P>TRANSFERRED TO MDDR #124460 IAW 35-11-02-01, CAT 'B', DUE 12FEB20, OXYGEN PRESSURE CB COLLARED ST 1837.</P><P>LP 1181412 - M2: REMOVED AND REPLACED VOLTAGE AVERAGING UNIT IAW AMM 35-11-06. OPS NORMAL AT THIS TIME. THIS CLEARS MDDR #124460. PLACARDS REMOVED. MCC NOTIFIED.</P>)

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