Service difficulty report · Pressure Switch · Boeing 76731K

Difficulty date
February 5, 2021
Submitted
February 8, 2021
Operation
Air carrier
Aircraft
N1487A
Make and model
Boeing 76731K
Aircraft serial
28865
Aircraft time
89,199 hours, 18,516 cycles
Engine
Ge CF680C2B7F
Part
Pressure Switch
Part number
21SN4184
Part serial
T21042A
Condition
Malfunctioned
Location
Rt Eng Anti Ice
Stage of operation
IN
How discovered
9
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

RIGHT ENG TAI EICAS MESSAGE.(<P>TRANSFERRED TO MEL 30-21-01-04-02, MDDR 141976, CAT "C". DUE DATE 15FEB21. T&I TJ: 21:42Z.</P><P>05JAN, RIV, LP 1246922, ITEM M3: REMOVED AND REPLACED RT ENGINE ANTI-ICE VALVE IAW AMM 30-21-03. OPS CHECK IS GOOD AT THIS TIME. IT DID NOT FIX THE PROBLEM. DMI REMAINS OPEN, REF TO ITEM M4 FOR CONTINUATION. P/N OFF: 2790583-108, S/N OFF: 4273F.</P><P>LP 1246923, ITEM M4: FOUND PIN 1 DAMAGED ON R/H ENG TAI PRESS SWITCH. REMOVED AND REPLACED R/H TAI PRESS SWITCH IAW AMM 30-21-01. OPS CHECK GOOD, NO DEFECTS NOTED AT THIS TIME. THIS CLEARS DMI# 141976. PLACARDS REMOVED, MCC NOTIFIED. HPSOV REACTIVATED IAW AMM 36-00-00-440. DISPATCH: SD @ 21:05Z.</P>)

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