Service difficulty report · Bypass Valve · Boeing 767424ER

Difficulty date
May 11, 2015
Submitted
May 11, 2015
Operation
Air carrier
Aircraft
N66051
Make and model
Boeing 767424ER
Aircraft serial
29446
Aircraft time
64,251 hours, 9,170 cycles
Part
Bypass Valve
Part number
3910027103
Part serial
0309
Condition
Failed
Location
Mlg
Stage of operation
DE
How discovered
O
Nature of condition
J
Precautionary procedure
A

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

What was found

DURING DESCENT THRU 15000 FT FOLLOWING GEAR MALFUNCTION THE FOLLOWING STATUS MSGS OCCURRED. AIR & GND DISAGREE, RT ICE DET, LT ICE DET, RT REV ISLN VLV, GEAR CTL, YSM, & FIRST OFFICERS DISPLAY T - R UNIT RII VERIFIED ASSEMBLY PN & CLEARANCE TO INSTALL FN085211. REMOVED & REINSTALLED SELECTOR BYPASS VLV FOR MLG UP TO MM 32-31-04-404-060 STEP 14 TEH U90700. ACCOMPLISHED MM 32-31-04-4 04-060 STEP E 13 THRU G2. SYS OPERATIONS CHECKED GOOD.