SDR 95ZZZX979

Service difficulty report · Dnlock Switch · Boeing 727155C

Difficulty date
February 9, 1995
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N715DH
Make and model
Boeing 727155C
Aircraft serial
19618
Part
Dnlock Switch
Part number
H1010261
Condition
Malfunctioned
Location
Lt Mlg
Stage of operation
LD
Nature of condition
N
Precautionary procedure
O

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

What was found

DURING INITIAL GEAR EXTENSION, GREEN LMG DOWNLOCK LIGHT DID NOT ILLUMINATE WITH RED UNSAFE LIGHT ILLUMINATED. PERFORMED ALTERNATE OPERATION, CH 5.144, PAGE 5, SUCCESSFULLY. DURING BOTH CYCLES, THE S/O DOOR ANNUNCIATOR LIGHTS SEQUENCED NORMALLY. TESTED UPLOCK AND DOWNLOCK SWITCHES IAW B MM 32-61-21, PAGES 501 AND 502. OPS CHECKS GOOD.