A cabin attendant found all 5 oxygen masks in her cabin were missing after a maintenance visit.

Attributes
ACN	224263
Time
Date	199210
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : iah
State Reference	TX
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Medium Transport, High Wing, 2 Turboprop Eng
Navigation In Use	Other Other
Flight Phase	ground : preflight
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 180 flight time total : 17240
ASRS Report	224263
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : less severe non adherence : far non adherence : published procedure
Independent Detector	other flight crewa other other : unspecified
Resolutory Action	other
Consequence	Other
Supplementary
Air Traffic Incident	other

Narrative:

Cabin crew/maintenance -- on oct/thu/92, I was assigned mdt 1 for a round trip to lft. Flight attendant reported that there were no oxygen masks in cabin for customers (5 required). Delayed the flight until an aircraft came onto the ramp that had extra masks. On oct/wed/92, I flew mdt 1 on 2 round trips just after it came out of a maintenance visit. No cabin problems were reported (except for a flight attendant flashlight). 2 crews flew mdt 1 after I did and before I picked it up again. I can only assume that the masks were not replaced after the maintenance visit and were not missed by 3 flight attendants. My flight attendant on oct/thu/92 found and reported the discrepancy.

Original NASA ASRS Text

Title: A CABIN ATTENDANT FOUND ALL 5 OXYGEN MASKS IN HER CABIN WERE MISSING AFTER A MAINT VISIT.

Narrative: CABIN CREW/MAINT -- ON OCT/THU/92, I WAS ASSIGNED MDT 1 FOR A ROUND TRIP TO LFT. FLT ATTENDANT RPTED THAT THERE WERE NO OXYGEN MASKS IN CABIN FOR CUSTOMERS (5 REQUIRED). DELAYED THE FLT UNTIL AN ACFT CAME ONTO THE RAMP THAT HAD EXTRA MASKS. ON OCT/WED/92, I FLEW MDT 1 ON 2 ROUND TRIPS JUST AFTER IT CAME OUT OF A MAINT VISIT. NO CABIN PROBLEMS WERE RPTED (EXCEPT FOR A FLT ATTENDANT FLASHLIGHT). 2 CREWS FLEW MDT 1 AFTER I DID AND BEFORE I PICKED IT UP AGAIN. I CAN ONLY ASSUME THAT THE MASKS WERE NOT REPLACED AFTER THE MAINT VISIT AND WERE NOT MISSED BY 3 FLT ATTENDANTS. MY FLT ATTENDANT ON OCT/THU/92 FOUND AND RPTED THE DISCREPANCY.

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.