SDR UIEA2018051200883

Service difficulty report · Warning Message · Boeing 767383

Difficulty date: May 12, 2018
Submitted: May 15, 2018
Operation: Air carrier
Aircraft: N1511A
Make and model: Boeing 767383
Aircraft serial: 24318
Aircraft time: 97,871 hours, 15,265 cycles
System (JASC): 3610 · Pneumatic Distribution System
Part: Warning Message
Condition: False Indication
Location: Pneumatic Sys
Stage of operation: DE
How discovered: O
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 DECENT, WITH N1 72.8% , 73.6%, LEFT DUCT 38 PSI, RIGHT DUCT 19 PSI, WHEN N1 REDUCED TO 42.4%, 42.3% BOTH DUCT PSI WERE 26. PERFORMED AN OPS TEST OF PNEUMATIC SYSTEM IAW AMM 71-00-00 AND 36-21-00, ALL CHECKED GOOD, ALL PRESSURES AND VALVE OPS GOOD, NO DEFECT NOTED.