A B737-200 was dispatched with access panels missing from the fuselage keel beam area.

Attributes
ACN	371162
Time
Date	199705
Day	Sat
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : zzz
State Reference	US
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B737-200
Operating Under FAR Part	Part 121
Flight Phase	other
Flight Plan	None
Person 1
Affiliation	company : air carrier
Function	other personnel other
Qualification	other other : other
ASRS Report	371162
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 flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Air Traffic Incident	other

Narrative:

I was informed that air carrier made a self-disclosure to the FAA about aircraft which was found to have 2 keel beam panels missing and 1 loose, these were found by the flight crew on walkaround in YYY on jun/xx/97. I worked on the aircraft on may/xx/97 in ZZZ hangar, with a logbook write-up page XXX item #1 wing-body overheat left side 1 hour into flight. At the hangar I hooked up an air start truck and ran the left air- conditioning pack to check for any visual leaks. At this time the flaps were lowered and both air-conditioning bay doors were opened, no leaks were found. I then did a resistance check per the maintenance manual on the left wing-body overheat detector wire, which checked ok. I then performed a bite check of the compartment overheat unit which showed a #44 fault which is located in the aft cargo compartment. As this was near shift change I made out a work turnover write-up stating the above mention checks and what was found.

Original NASA ASRS Text

Title: A B737-200 WAS DISPATCHED WITH ACCESS PANELS MISSING FROM THE FUSELAGE KEEL BEAM AREA.

Narrative: I WAS INFORMED THAT ACR MADE A SELF-DISCLOSURE TO THE FAA ABOUT ACFT WHICH WAS FOUND TO HAVE 2 KEEL BEAM PANELS MISSING AND 1 LOOSE, THESE WERE FOUND BY THE FLC ON WALKAROUND IN YYY ON JUN/XX/97. I WORKED ON THE ACFT ON MAY/XX/97 IN ZZZ HANGAR, WITH A LOGBOOK WRITE-UP PAGE XXX ITEM #1 WING-BODY OVERHEAT L SIDE 1 HR INTO FLT. AT THE HANGAR I HOOKED UP AN AIR START TRUCK AND RAN THE L AIR- CONDITIONING PACK TO CHK FOR ANY VISUAL LEAKS. AT THIS TIME THE FLAPS WERE LOWERED AND BOTH AIR-CONDITIONING BAY DOORS WERE OPENED, NO LEAKS WERE FOUND. I THEN DID A RESISTANCE CHK PER THE MAINT MANUAL ON THE L WING-BODY OVERHEAT DETECTOR WIRE, WHICH CHKED OK. I THEN PERFORMED A BITE CHK OF THE COMPARTMENT OVERHEAT UNIT WHICH SHOWED A #44 FAULT WHICH IS LOCATED IN THE AFT CARGO COMPARTMENT. AS THIS WAS NEAR SHIFT CHANGE I MADE OUT A WORK TURNOVER WRITE-UP STATING THE ABOVE MENTION CHKS AND WHAT WAS FOUND.

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.