<< >> NASA ASRS Report 454180, September 1999

Captain of a B777 received letter of investigation from the FAA regarding the lack of aircraft logbook entry covering a cockpit door lock malfunction noted by an FAA inspector almost 2 months earlier.

Attributes
ACN	454180
Time
Date	199909
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : dfw.airport
State Reference	TX
Altitude	agl single value : 0
Environment
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B777 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	ground : parked
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	454180
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : less severe maintenance problem : improper documentation non adherence : published procedure
Independent Detector	aircraft equipment other aircraft equipment : cockpit door lock other other : 3
Resolutory Action	none taken : detected after the fact
Consequence	faa : assigned or threatened penalties faa : investigated other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Upon my arrival home at XA00 on nov/sun/99, my wife handed me a registered letter postmarked nov/xx/99 and received over the wkend of nov/fri-sat/99. The letter was from an aviation safety inspector. He advised me that he had inspected on arrival the aircraft that I commanded for flight returning to dfw from kix on sep/xx/99. The inspection revealed that the cockpit door lock had failed and he was unable to secure the cockpit door. He noted no entry concerning the door had been made in the logbook. During the flight I returned to the cockpit at least 6 times and on each entry I needed to use my cockpit door key to gain entry. My last entry was approximately 45 mins prior to landing and at that time the cockpit door lock still required a key for entry. When I signed the logbook upon arrival, I believed that the cockpit door lock was operative. No flight crew member advised me during the flight or at its conclusion that they had experienced any malfunction of the cockpit door lock.

Related reports:

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Original NASA ASRS Text

Title: CAPT OF A B777 RECEIVED LETTER OF INVESTIGATION FROM THE FAA REGARDING THE LACK OF ACFT LOGBOOK ENTRY COVERING A COCKPIT DOOR LOCK MALFUNCTION NOTED BY AN FAA INSPECTOR ALMOST 2 MONTHS EARLIER.

Narrative: UPON MY ARR HOME AT XA00 ON NOV/SUN/99, MY WIFE HANDED ME A REGISTERED LETTER POSTMARKED NOV/XX/99 AND RECEIVED OVER THE WKEND OF NOV/FRI-SAT/99. THE LETTER WAS FROM AN AVIATION SAFETY INSPECTOR. HE ADVISED ME THAT HE HAD INSPECTED ON ARR THE ACFT THAT I COMMANDED FOR FLT RETURNING TO DFW FROM KIX ON SEP/XX/99. THE INSPECTION REVEALED THAT THE COCKPIT DOOR LOCK HAD FAILED AND HE WAS UNABLE TO SECURE THE COCKPIT DOOR. HE NOTED NO ENTRY CONCERNING THE DOOR HAD BEEN MADE IN THE LOGBOOK. DURING THE FLT I RETURNED TO THE COCKPIT AT LEAST 6 TIMES AND ON EACH ENTRY I NEEDED TO USE MY COCKPIT DOOR KEY TO GAIN ENTRY. MY LAST ENTRY WAS APPROX 45 MINS PRIOR TO LNDG AND AT THAT TIME THE COCKPIT DOOR LOCK STILL REQUIRED A KEY FOR ENTRY. WHEN I SIGNED THE LOGBOOK UPON ARR, I BELIEVED THAT THE COCKPIT DOOR LOCK WAS OPERATIVE. NO FLC MEMBER ADVISED ME DURING THE FLT OR AT ITS CONCLUSION THAT THEY HAD EXPERIENCED ANY MALFUNCTION OF THE COCKPIT DOOR LOCK.

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.