A B777 on takeoff roll rejected the takeoff due to a low power #2 engine caused by a loose burner pr...

Attributes
ACN	387452
Time
Date	199712
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz
State Reference	US
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Light	Dusk
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B777-200
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	other
Flight Plan	None
Person 1
Affiliation	company : air carrier
Function	other personnel other
Qualification	other other : other
ASRS Report	387452
Person 2
Affiliation	company : air carrier
Function	other personnel other
Qualification	other other : other
ASRS Report	387369
Events
Anomaly	aircraft equipment problem : critical non adherence : far non adherence : published procedure other anomaly other
Independent Detector	other flight crewa other other : unspecified cockpit
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

On dec/xx/97 on an air carrier aircraft B777, an electronic engine control was replaced on #2 engine in response to an inbound write-up about 'right engine eec' being displayed on EICAS. I spoke with a maintenance controller about problem and he suggested to replace #2 engine electronic engine control. My partner and I did replace #2 engine electronic engine control per the maintenance manual and being a required inspection item had it inspected and also taxi crew did the idle run procedure called out in the maintenance manual. Everything checked ok, no messages appeared and aircraft was taken to terminal, loaded with passenger, and while on takeoff roll flight crew could not attain takeoff power, so takeoff was aborted and aircraft was returned to gate. Upon reinspection of electronic engine control a burner pressure sense line was found to be loose, was retightened and aircraft departed ZZZ. No further complaints were noted. Comment: we are wondering why there is not a high power assurance run called out to check this job because idle run did not turn up this fault after replacement of electronic engine control.

Original NASA ASRS Text

Title: A B777 ON TKOF ROLL REJECTED THE TKOF DUE TO A LOW PWR #2 ENG CAUSED BY A LOOSE BURNER PRESSURE SENSE LINE.

Narrative: ON DEC/XX/97 ON AN ACR ACFT B777, AN ELECTRONIC ENG CTL WAS REPLACED ON #2 ENG IN RESPONSE TO AN INBOUND WRITE-UP ABOUT 'R ENG EEC' BEING DISPLAYED ON EICAS. I SPOKE WITH A MAINT CTLR ABOUT PROB AND HE SUGGESTED TO REPLACE #2 ENG ELECTRONIC ENG CTL. MY PARTNER AND I DID REPLACE #2 ENG ELECTRONIC ENG CTL PER THE MAINT MANUAL AND BEING A REQUIRED INSPECTION ITEM HAD IT INSPECTED AND ALSO TAXI CREW DID THE IDLE RUN PROC CALLED OUT IN THE MAINT MANUAL. EVERYTHING CHKED OK, NO MESSAGES APPEARED AND ACFT WAS TAKEN TO TERMINAL, LOADED WITH PAX, AND WHILE ON TKOF ROLL FLC COULD NOT ATTAIN TKOF PWR, SO TKOF WAS ABORTED AND ACFT WAS RETURNED TO GATE. UPON REINSPECTION OF ELECTRONIC ENG CTL A BURNER PRESSURE SENSE LINE WAS FOUND TO BE LOOSE, WAS RETIGHTENED AND ACFT DEPARTED ZZZ. NO FURTHER COMPLAINTS WERE NOTED. COMMENT: WE ARE WONDERING WHY THERE IS NOT A HIGH PWR ASSURANCE RUN CALLED OUT TO CHK THIS JOB BECAUSE IDLE RUN DID NOT TURN UP THIS FAULT AFTER REPLACEMENT OF ELECTRONIC ENG CTL.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

A B777 on takeoff roll rejected the takeoff due to a low power #2 engine caused by a loose burner pressure sense line.