An ATR72 on preflight check was found to have the right engine bleed valve inoperative. The crew ele...

Attributes
ACN	376192
Time
Date	199707
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : dfw
State Reference	TX
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	ATR 72
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	ground : preflight
Flight Plan	None
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 16000 flight time type : 850
ASRS Report	376192
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	aircraft equipment problem : less severe non adherence : published procedure non adherence other other anomaly other
Independent Detector	other flight crewa other other : unspecified cockpit
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation

Narrative:

We were on the last round trip of a 3 day sequence. Our aircraft arrived from the maintenance hangar at departure time. We were tired and ready to get the last trip over with. The aircraft was heat soaked and we began boarding a full load of people. We started the right engine to get some air flowing through the cabin. After a few mins the right engine bleed faulted which has happened before when it is very hot. I brought the propeller out of feather to get air flowing around the cowling thinking it might enable us to reset the bleed valve. It reset and faulted again in a few mins. Thought it might cool and reset when airborne so we departed not wanting to delay. It reset in the air for a few mins and faulted again. Cabin temperature 100 degrees, some passenger and 1 flight attendant felt sick. Aircraft grounded in maf upon arrival for engine bleed fault -- right engine. I should not have put 64 people on a heat soaked aircraft, and departed with a mechanical problem. This resulted in dangerous cabin temperatures, flying an aircraft with a known mechanical problem, and having to ground an aircraft at an out-station. In other words, using poor judgement -- in an effort to finish a trip. Once en route I tried to cool the cabin by using the right air- conditioning pack and the ground xfeed system which is a violation of our procedures. When the bleed faults the associated pack should be off.

Original NASA ASRS Text

Title: AN ATR72 ON PREFLT CHK WAS FOUND TO HAVE THE R ENG BLEED VALVE INOP. THE CREW ELECTED TO TAKE THE ACFT BUT WERE UNABLE TO COOL THE CABIN INFLT RESULTING IN SICK PAX AND A CANCELED TRIP.

Narrative: WE WERE ON THE LAST ROUND TRIP OF A 3 DAY SEQUENCE. OUR ACFT ARRIVED FROM THE MAINT HANGAR AT DEP TIME. WE WERE TIRED AND READY TO GET THE LAST TRIP OVER WITH. THE ACFT WAS HEAT SOAKED AND WE BEGAN BOARDING A FULL LOAD OF PEOPLE. WE STARTED THE R ENG TO GET SOME AIR FLOWING THROUGH THE CABIN. AFTER A FEW MINS THE R ENG BLEED FAULTED WHICH HAS HAPPENED BEFORE WHEN IT IS VERY HOT. I BROUGHT THE PROP OUT OF FEATHER TO GET AIR FLOWING AROUND THE COWLING THINKING IT MIGHT ENABLE US TO RESET THE BLEED VALVE. IT RESET AND FAULTED AGAIN IN A FEW MINS. THOUGHT IT MIGHT COOL AND RESET WHEN AIRBORNE SO WE DEPARTED NOT WANTING TO DELAY. IT RESET IN THE AIR FOR A FEW MINS AND FAULTED AGAIN. CABIN TEMP 100 DEGS, SOME PAX AND 1 FLT ATTENDANT FELT SICK. ACFT GNDED IN MAF UPON ARR FOR ENG BLEED FAULT -- R ENG. I SHOULD NOT HAVE PUT 64 PEOPLE ON A HEAT SOAKED ACFT, AND DEPARTED WITH A MECHANICAL PROB. THIS RESULTED IN DANGEROUS CABIN TEMPS, FLYING AN ACFT WITH A KNOWN MECHANICAL PROB, AND HAVING TO GND AN ACFT AT AN OUT-STATION. IN OTHER WORDS, USING POOR JUDGEMENT -- IN AN EFFORT TO FINISH A TRIP. ONCE ENRTE I TRIED TO COOL THE CABIN BY USING THE R AIR- CONDITIONING PACK AND THE GND XFEED SYS WHICH IS A VIOLATION OF OUR PROCS. WHEN THE BLEED FAULTS THE ASSOCIATED PACK SHOULD BE OFF.

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.

An ATR72 on preflight check was found to have the right engine bleed valve inoperative. The crew elected to take the aircraft but were unable to cool the cabin in-flight resulting in sick passenger and a canceled trip.