|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||1801 To 2400|
|Locale Reference||airport : zzz.airport|
|Altitude||msl single value : 27000|
|Controlling Facilities||artcc : zzz.artcc|
artcc : zzz.artcc
|Operator||common carrier : air carrier|
|Make Model Name||B767-300 and 300 ER|
|Operating Under FAR Part||Part 121|
|Flight Phase||climbout : intermediate altitude|
|Route In Use||departure sid : n/s|
|Affiliation||company : air carrier|
|Function||flight crew : captain|
oversight : pic
|Experience||flight time last 90 days : 209|
flight time total : 19000
flight time type : 4397
|Anomaly||aircraft equipment problem : critical|
|Independent Detector||aircraft equipment other aircraft equipment : eicas|
other flight crewa
|Resolutory Action||flight crew : landed as precaution|
flight crew : diverted to another airport
|Maintenance||performance deficiency : repair|
performance deficiency : fault isolation
Prior to departure; I spoke with dispatcher about the write-up history involving the left pack inoperative that was currently deferred and being worked on by maintenance. We discussed that if the problem recurred after departure; depending on our position at the time; I would not take the plane across the ocean. The aircraft came from the hangar with the valve replaced and the deferral cleared. On climb out through FL270 we got the left pack off light EICAS. We requested holding with center while we planned with dispatch and maintenance controller and received a 'ppos' hold. After running checklists and conferral; we returned to ZZZ. It was decided between the crew; maintenance controller; and dispatch that an overweight landing would not be an issue. We lowered the gear on final and got a doors light and corresponding EICAS along with 3 green landing gear down lights. We went around at 1500 ft for a runway heading go around to 2000 ft. After again conferring with maintenance controller and dispatch; we agreed to accomplish the landing with equipment standing by. This uneventful landing was made at a landing weight of 321K. The doors light extinguished on landing and we taxied to the gate. The doors light was subsequently found to be a misaligned sensor.
Original NASA ASRS Text
Title: B767-300 RETURNS TO DEP ARPT WHEN AN AIR CONDITIONING PACK FAILS PRIOR TO AN OCEANIC CROSSING.
Narrative: PRIOR TO DEP; I SPOKE WITH DISPATCHER ABOUT THE WRITE-UP HISTORY INVOLVING THE L PACK INOP THAT WAS CURRENTLY DEFERRED AND BEING WORKED ON BY MAINT. WE DISCUSSED THAT IF THE PROB RECURRED AFTER DEP; DEPENDING ON OUR POS AT THE TIME; I WOULD NOT TAKE THE PLANE ACROSS THE OCEAN. THE ACFT CAME FROM THE HANGAR WITH THE VALVE REPLACED AND THE DEFERRAL CLRED. ON CLBOUT THROUGH FL270 WE GOT THE L PACK OFF LIGHT EICAS. WE REQUESTED HOLDING WITH CTR WHILE WE PLANNED WITH DISPATCH AND MAINT CTLR AND RECEIVED A 'PPOS' HOLD. AFTER RUNNING CHKLISTS AND CONFERRAL; WE RETURNED TO ZZZ. IT WAS DECIDED BTWN THE CREW; MAINT CTLR; AND DISPATCH THAT AN OVERWT LNDG WOULD NOT BE AN ISSUE. WE LOWERED THE GEAR ON FINAL AND GOT A DOORS LIGHT AND CORRESPONDING EICAS ALONG WITH 3 GREEN LNDG GEAR DOWN LIGHTS. WE WENT AROUND AT 1500 FT FOR A RWY HDG GAR TO 2000 FT. AFTER AGAIN CONFERRING WITH MAINT CTLR AND DISPATCH; WE AGREED TO ACCOMPLISH THE LNDG WITH EQUIP STANDING BY. THIS UNEVENTFUL LNDG WAS MADE AT A LNDG WT OF 321K. THE DOORS LIGHT EXTINGUISHED ON LNDG AND WE TAXIED TO THE GATE. THE DOORS LIGHT WAS SUBSEQUENTLY FOUND TO BE A MISALIGNED SENSOR.
Data retrieved from NASA's ASRS site as of May 2009 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.