<< >> NASA ASRS Report 99385, November 1988

Smoke alarm activated in aft lavatory shortly after takeoff in air carrier medium large transport. Return land.

Attributes
ACN	99385
Time
Date	198811
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : roc
State Reference	NY
Altitude	msl bound lower : 2500 msl bound upper : 4000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : roc
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	climbout : intermediate altitude climbout : takeoff
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : atp pilot : private pilot : commercial
Experience	flight time last 90 days : 225 flight time total : 17000 flight time type : 7000
ASRS Report	99385
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 220 flight time total : 5500 flight time type : 2000
ASRS Report	99291
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other other : unspecified
Resolutory Action	flight crew : declared emergency none taken : unable other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

On takeoff from roc on a flight to bos we climbed through 2500' MSL and the F/a in the rear jump seat called the cockpit to report that 1 smoke detector had gone off, she had disabled it. She further noticed a blue haze in the cabin and as we spoke the other smoke detector went off. I elected to return to the field. The landing was made as an overweight landing, but requiring no inspection. The landing was smooth and brakes were not applied until 60 KTS. No emergency was declared, no priority handling was requested, crash equipment was present but not called out by the crew. No fire was ever detected and all cockpit instruments were normal. When we turned off the runway the right generator dropped off the line. The aircraft had a 5 day history of right generator problems. We had flown the aircraft the previous night and had experienced a generator problem on 2 out of 3 legs. The problem had been written up and worked on in cle and roc. Supplemental information from acn 99291: we ferried the aircraft back to pit for further maintenance action.

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Original NASA ASRS Text

Title: SMOKE ALARM ACTIVATED IN AFT LAVATORY SHORTLY AFTER TKOF IN ACR MLG. RETURN LAND.

Narrative: ON TKOF FROM ROC ON A FLT TO BOS WE CLBED THROUGH 2500' MSL AND THE F/A IN THE REAR JUMP SEAT CALLED THE COCKPIT TO RPT THAT 1 SMOKE DETECTOR HAD GONE OFF, SHE HAD DISABLED IT. SHE FURTHER NOTICED A BLUE HAZE IN THE CABIN AND AS WE SPOKE THE OTHER SMOKE DETECTOR WENT OFF. I ELECTED TO RETURN TO THE FIELD. THE LNDG WAS MADE AS AN OVERWEIGHT LNDG, BUT REQUIRING NO INSPECTION. THE LNDG WAS SMOOTH AND BRAKES WERE NOT APPLIED UNTIL 60 KTS. NO EMER WAS DECLARED, NO PRIORITY HANDLING WAS REQUESTED, CRASH EQUIP WAS PRESENT BUT NOT CALLED OUT BY THE CREW. NO FIRE WAS EVER DETECTED AND ALL COCKPIT INSTRUMENTS WERE NORMAL. WHEN WE TURNED OFF THE RWY THE RIGHT GENERATOR DROPPED OFF THE LINE. THE ACFT HAD A 5 DAY HISTORY OF RIGHT GENERATOR PROBS. WE HAD FLOWN THE ACFT THE PREVIOUS NIGHT AND HAD EXPERIENCED A GENERATOR PROB ON 2 OUT OF 3 LEGS. THE PROB HAD BEEN WRITTEN UP AND WORKED ON IN CLE AND ROC. SUPPLEMENTAL INFO FROM ACN 99291: WE FERRIED THE ACFT BACK TO PIT FOR FURTHER MAINT ACTION.

Data retrieved from NASA's ASRS site as of August 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.