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|
Attributes | |
ACN | 261169 |
Time | |
Date | 199401 |
Day | Wed |
Local Time Of Day | 0601 To 1200 |
Place | |
Locale Reference | airport : sdf |
State Reference | KY |
Altitude | agl bound lower : 0 agl bound upper : 0 |
Environment | |
Flight Conditions | Marginal |
Light | Dawn |
Aircraft 1 | |
Controlling Facilities | artcc : mdcs |
Operator | common carrier : air carrier |
Make Model Name | DC-9 30 |
Operating Under FAR Part | Part 121 |
Flight Phase | climbout : takeoff other |
Flight Plan | IFR |
Person 1 | |
Affiliation | company : air carrier |
Function | flight crew : captain oversight : pic |
Qualification | pilot : cfi pilot : atp |
Experience | flight time last 90 days : 200 flight time total : 14000 flight time type : 5000 |
ASRS Report | 261169 |
Person 2 | |
Affiliation | company : air carrier |
Function | flight crew : first officer |
Qualification | pilot : atp |
Events | |
Anomaly | aircraft equipment problem : critical inflight encounter other non adherence : far non adherence : published procedure |
Independent Detector | other flight crewa |
Resolutory Action | flight crew : rejected takeoff other |
Consequence | Other |
Supplementary | |
Primary Problem | Aircraft |
Air Traffic Incident | Pilot Deviation |
Narrative:
This was ours and the aircraft's 1ST flight of the day. It was still dark. The WX was 1700 overcast 4 mi visibility and fog. The temperature was 36 degrees and the deviation point was 35 degrees. The temperature had stayed in the 36 degree to 38 degree range all night with occasional rain showers in the area. About 40 mins prior to departure the first officer finished the exterior walk around inspection. He reported everything ok and that the aircraft surfaces were wet, no ice. 20 mins before departure the aircraft was fueled with 9600 pounds of fuel to bring us to our release fuel amount of 17600. We started our takeoff roll on runway 19, which is 10000 ft long. Passing 100 KTS the left engine briefly compressor stalled. I rejected the takeoff and we returned to the gate for inspection. While we were taxiing in one of my flight attendants told me a passenger had reported seeing a chunk of ice come off the top of the left wing during our takeoff attempt. When I arrived at the gate I asked maintenance to do a hand feel check for ice on the top of the wings as none was visible. The mechanic said he would do the check, but he didn't believe he would find any because he had inspected the aircraft earlier and found only water. The temperature is in the mid 30's he argued. When he returned, he said he found clear ice on the top inboard portion of both wings. He said he could not tell it was there until he touched it with his hand. It is my belief that the fuel pumped on my aircraft was cold, and froze the water on the wings. This station is a northern city and the previous few days were in the teens. There was no damage to the engine or airframe so we deiced and departed with no further incident. I have to say, I was caught off guard to say the least. 2 other people besides myself inspected the aircraft to be sure it was clean. All of us missed it. My conclusions from this situation: the final crew inspection for ice should be made after fueling is complete. Fuel can be either warmer or colder than the outside air temperature. Clear ice can be invisible to the eye. Particularly in this situation, (temperature above freezing wet wing) if you decide not to deice have someone get a ladder and crawl up on the wing and hand check for ice. Don't let your guard down just because the WX is above freezing with no precipitation falling. Callback conversation with reporter revealed the following information: the engine was not damaged. The trip departed again shortly after the engine and aircraft were inspected. An md-80 parked at another gate was subsequently inspected and also found to have ice on the upper wing surface near the root. Reporter is convinced there was no ice on the wing prior to fueling. He does not know if the fuel is stored above or under ground. He heard that he air carrier is considering installing tufts on the dc-9 wings similar to the tufts installed on all their md-80 wings to aid in inspection for ice formation.
Original NASA ASRS Text
Title: COMPRESSOR STALL ON TKOF MANDATES THAT TKOF BE ABORTED. FOREIGN OBJECT INGESTION ICE.
Narrative: THIS WAS OURS AND THE ACFT'S 1ST FLT OF THE DAY. IT WAS STILL DARK. THE WX WAS 1700 OVCST 4 MI VISIBILITY AND FOG. THE TEMP WAS 36 DEGS AND THE DEV POINT WAS 35 DEGS. THE TEMP HAD STAYED IN THE 36 DEG TO 38 DEG RANGE ALL NIGHT WITH OCCASIONAL RAIN SHOWERS IN THE AREA. ABOUT 40 MINS PRIOR TO DEP THE FO FINISHED THE EXTERIOR WALK AROUND INSPECTION. HE RPTED EVERYTHING OK AND THAT THE ACFT SURFACES WERE WET, NO ICE. 20 MINS BEFORE DEP THE ACFT WAS FUELED WITH 9600 LBS OF FUEL TO BRING US TO OUR RELEASE FUEL AMOUNT OF 17600. WE STARTED OUR TKOF ROLL ON RWY 19, WHICH IS 10000 FT LONG. PASSING 100 KTS THE L ENG BRIEFLY COMPRESSOR STALLED. I REJECTED THE TKOF AND WE RETURNED TO THE GATE FOR INSPECTION. WHILE WE WERE TAXIING IN ONE OF MY FLT ATTENDANTS TOLD ME A PAX HAD RPTED SEEING A CHUNK OF ICE COME OFF THE TOP OF THE L WING DURING OUR TKOF ATTEMPT. WHEN I ARRIVED AT THE GATE I ASKED MAINT TO DO A HAND FEEL CHK FOR ICE ON THE TOP OF THE WINGS AS NONE WAS VISIBLE. THE MECH SAID HE WOULD DO THE CHK, BUT HE DIDN'T BELIEVE HE WOULD FIND ANY BECAUSE HE HAD INSPECTED THE ACFT EARLIER AND FOUND ONLY WATER. THE TEMP IS IN THE MID 30'S HE ARGUED. WHEN HE RETURNED, HE SAID HE FOUND CLR ICE ON THE TOP INBOARD PORTION OF BOTH WINGS. HE SAID HE COULD NOT TELL IT WAS THERE UNTIL HE TOUCHED IT WITH HIS HAND. IT IS MY BELIEF THAT THE FUEL PUMPED ON MY ACFT WAS COLD, AND FROZE THE WATER ON THE WINGS. THIS STATION IS A NORTHERN CITY AND THE PREVIOUS FEW DAYS WERE IN THE TEENS. THERE WAS NO DAMAGE TO THE ENG OR AIRFRAME SO WE DEICED AND DEPARTED WITH NO FURTHER INCIDENT. I HAVE TO SAY, I WAS CAUGHT OFF GUARD TO SAY THE LEAST. 2 OTHER PEOPLE BESIDES MYSELF INSPECTED THE ACFT TO BE SURE IT WAS CLEAN. ALL OF US MISSED IT. MY CONCLUSIONS FROM THIS SIT: THE FINAL CREW INSPECTION FOR ICE SHOULD BE MADE AFTER FUELING IS COMPLETE. FUEL CAN BE EITHER WARMER OR COLDER THAN THE OUTSIDE AIR TEMP. CLEAR ICE CAN BE INVISIBLE TO THE EYE. PARTICULARLY IN THIS SIT, (TEMP ABOVE FREEZING WET WING) IF YOU DECIDE NOT TO DEICE HAVE SOMEONE GET A LADDER AND CRAWL UP ON THE WING AND HAND CHK FOR ICE. DON'T LET YOUR GUARD DOWN JUST BECAUSE THE WX IS ABOVE FREEZING WITH NO PRECIPITATION FALLING. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE ENG WAS NOT DAMAGED. THE TRIP DEPARTED AGAIN SHORTLY AFTER THE ENG AND ACFT WERE INSPECTED. AN MD-80 PARKED AT ANOTHER GATE WAS SUBSEQUENTLY INSPECTED AND ALSO FOUND TO HAVE ICE ON THE UPPER WING SURFACE NEAR THE ROOT. RPTR IS CONVINCED THERE WAS NO ICE ON THE WING PRIOR TO FUELING. HE DOES NOT KNOW IF THE FUEL IS STORED ABOVE OR UNDER GROUND. HE HEARD THAT HE ACR IS CONSIDERING INSTALLING TUFTS ON THE DC-9 WINGS SIMILAR TO THE TUFTS INSTALLED ON ALL THEIR MD-80 WINGS TO AID IN INSPECTION FOR ICE FORMATION.
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.