Service difficulty report · Heat Exchanger · Boeing 747123

Difficulty date
June 12, 1997
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N858FT
Make and model
Boeing 747123
Aircraft serial
20109
Part
Heat Exchanger
Condition
Cracked
Location
Nr 3 Pack
Stage of operation
IN
Nature of condition
O
Precautionary procedure
K

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

What was found

NR 3 A/C PACK HEAT EXCHANGER IS CRACKED. REINSTALLED NR 3 HEAT EXCHANGER IAW MM 21-51-03, WELDED CRACKED AREA IAW BAC5975.