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A B747-100 flight crew on takeoff at 100 ft experienced heavy fuel fumes in the cockpit from the air conditioning system, fumes dispersed above 10000 ft. Postflt check revealed leading edge underwing fuselage to wing attach fitting fairings at #2 tank leaking.
| Attributes | |
| ACN | 397008 |
| Time | |
| Date | 199803 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : cas |
| State Reference | FO |
| Altitude | agl bound lower : 0 agl bound upper : 100 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : cas |
| Operator | common carrier : air carrier |
| Make Model Name | B747-100 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : initial climbout : takeoff |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : cfi |
| Experience | flight time last 90 days : 150 flight time total : 13000 flight time type : 2400 |
| ASRS Report | 397008 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | aircraft equipment problem : critical non adherence : far non adherence : published procedure other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : declared emergency none taken : detected after the fact |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
Narrative:
Right after takeoff heavy fuel fumes in cockpit from air conditioning system. Above 10000 ft odor diminished. On postflt noticed leading edge (bottom wing) fiberglas panels distorted and several patches. Recorded in logbook. Maintenance found fuel leaks in #2 main tank to fuselage area. Fuel spilled into area of air cycle machines. 3 days later foreign maintenance agency doing repair found over 30 leaks in wing tanks. Last month same problem on sister ship. Old aircraft require more aggressive maintenance procedures and inspections. Callback conversation with reporter revealed the following information: the reporter stated the fuel leaks were along the lower surface of the wing to fuselage attach body fairings and much work was put into sealing the interior of #2 and #3 tanks. The reporter said it did not seem the leakage was from fasteners but structure. The reporter stated any time fuel leakage was present a danger of fire exists.
Original NASA ASRS Text
Title: A B747-100 FLC ON TKOF AT 100 FT EXPERIENCED HVY FUEL FUMES IN THE COCKPIT FROM THE AIR CONDITIONING SYS, FUMES DISPERSED ABOVE 10000 FT. POSTFLT CHK REVEALED LEADING EDGE UNDERWING FUSELAGE TO WING ATTACH FITTING FAIRINGS AT #2 TANK LEAKING.
Narrative: RIGHT AFTER TKOF HVY FUEL FUMES IN COCKPIT FROM AIR CONDITIONING SYS. ABOVE 10000 FT ODOR DIMINISHED. ON POSTFLT NOTICED LEADING EDGE (BOTTOM WING) FIBERGLAS PANELS DISTORTED AND SEVERAL PATCHES. RECORDED IN LOGBOOK. MAINT FOUND FUEL LEAKS IN #2 MAIN TANK TO FUSELAGE AREA. FUEL SPILLED INTO AREA OF AIR CYCLE MACHINES. 3 DAYS LATER FOREIGN MAINT AGENCY DOING REPAIR FOUND OVER 30 LEAKS IN WING TANKS. LAST MONTH SAME PROB ON SISTER SHIP. OLD ACFT REQUIRE MORE AGGRESSIVE MAINT PROCS AND INSPECTIONS. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE FUEL LEAKS WERE ALONG THE LOWER SURFACE OF THE WING TO FUSELAGE ATTACH BODY FAIRINGS AND MUCH WORK WAS PUT INTO SEALING THE INTERIOR OF #2 AND #3 TANKS. THE RPTR SAID IT DID NOT SEEM THE LEAKAGE WAS FROM FASTENERS BUT STRUCTURE. THE RPTR STATED ANY TIME FUEL LEAKAGE WAS PRESENT A DANGER OF FIRE EXISTS.
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.