SDR TWRA9836

Service difficulty report · Clamp · Boeing 747136

Difficulty date: June 16, 1998
Submitted: March 26, 2000
Operation: Air carrier
Aircraft: N606FF
Make and model: Boeing 747136
Aircraft serial: 20273
System (JASC): 3610 · Pneumatic Distribution System
Part: Clamp
Condition: Loose
Location: Nr 4 Pdu
Stage of operation: DE
Nature of condition: M
Precautionary procedure: K

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

What was found

AT START OF DESCENT TO SJU FROM FL 37,000 FEET, THRUST LEVER AT IDLE, LEFT WING OVERHEAT LIGHT CAME ON. ABNORMAL PROCEDURES FOR WING OVERHEAT COMPLETED, LIGHT WENT OUT AFTER 8 MINUTES. THRUST LEVER AT IDLE, SYSTEM NORMAL AND LIGHT NEVER CAME BACK ON. FOUND LOOSE CLAMP ON NR 4 PDU LT WING. TIGHTENED CLAMP, LEAK CHECK OK PER MM 26-18-00, PAGE 101. (X)