An L1011-100 was dispatched with a left wing fuel quantity tank probe cover plate not fastened.

Attributes
ACN	398631
Time
Date	199804
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz
State Reference	US
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	L-1011-1 100/200/250
Operating Under FAR Part	Part 121
Navigation In Use	Other
Flight Phase	other
Flight Plan	None
Person 1
Affiliation	company : air carrier
Function	other personnel other
Qualification	other other : other
ASRS Report	398631
Person 2
Affiliation	company : air carrier
Function	other personnel other
Qualification	other other : other
Events
Anomaly	aircraft equipment problem : critical non adherence : far non adherence : published procedure other anomaly other
Independent Detector	other other : unspecified atc other other : unspecified
Resolutory Action	none taken : detected after the fact other
Consequence	faa : investigated Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

I performed on the 2L fuel quantity system on apr/xa/98, at approximately XA00 EST. The tank was defueled and sumped. All probes in 2L tank were checked for integrity. As per maintenance coordination the fuel probes, numbers 5 through 9, were replaced along with 2L signal conditioner, then the tank quantity indicators were recalibrated to zero quantity. All maintenance was performed per maintenance manual. The aircraft was then moved to the air carrier tech operations center for a #3 engine change. The aircraft was returned to service on apr/xe/98, approximately 36 hours after fuel tank maintenance was performed. On apr/xc/98, ZZZ tower reported that on takeoff something was streaming from the left outboard wing. Visual inspection noted fuel coming from the top of the wing. Aircraft returned to ZZZ. ZZZ maintenance found missing fasteners at the #5 fuel probe, on the 2L fuel tank. Callback conversation with reporter revealed the following information: the reporter stated the fuel quantity work was accomplished solely by the reporter and is sure all the tank probe covers were torqued to maintenance manual limits. The reporter said the mechanic who repaired the aircraft reported 4 fasteners were missing and one was intact and tight. The reporter stated the FAA has made contact.

Original NASA ASRS Text

Title: AN L1011-100 WAS DISPATCHED WITH A L WING FUEL QUANTITY TANK PROBE COVER PLATE NOT FASTENED.

Narrative: I PERFORMED ON THE 2L FUEL QUANTITY SYS ON APR/XA/98, AT APPROX XA00 EST. THE TANK WAS DEFUELED AND SUMPED. ALL PROBES IN 2L TANK WERE CHKED FOR INTEGRITY. AS PER MAINT COORD THE FUEL PROBES, NUMBERS 5 THROUGH 9, WERE REPLACED ALONG WITH 2L SIGNAL CONDITIONER, THEN THE TANK QUANTITY INDICATORS WERE RECALIBRATED TO ZERO QUANTITY. ALL MAINT WAS PERFORMED PER MAINT MANUAL. THE ACFT WAS THEN MOVED TO THE ACR TECH OPS CTR FOR A #3 ENG CHANGE. THE ACFT WAS RETURNED TO SVC ON APR/XE/98, APPROX 36 HRS AFTER FUEL TANK MAINT WAS PERFORMED. ON APR/XC/98, ZZZ TWR RPTED THAT ON TKOF SOMETHING WAS STREAMING FROM THE L OUTBOARD WING. VISUAL INSPECTION NOTED FUEL COMING FROM THE TOP OF THE WING. ACFT RETURNED TO ZZZ. ZZZ MAINT FOUND MISSING FASTENERS AT THE #5 FUEL PROBE, ON THE 2L FUEL TANK. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE FUEL QUANTITY WORK WAS ACCOMPLISHED SOLELY BY THE RPTR AND IS SURE ALL THE TANK PROBE COVERS WERE TORQUED TO MAINT MANUAL LIMITS. THE RPTR SAID THE MECH WHO REPAIRED THE ACFT RPTED 4 FASTENERS WERE MISSING AND ONE WAS INTACT AND TIGHT. THE RPTR STATED THE FAA HAS MADE CONTACT.

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.