<< >> NASA ASRS Report 356266, December 1996

Flight crew of an light transport with 33 passenger and a flight attendant, cabin address system was inoperative and deferred as allowed if the cabin cockpit interphone system was working. Flight crew did not like the inconvenience and believed it to be unsafe.

Attributes
ACN	356266
Time
Date	199612
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : grr
State Reference	MI
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	ground : preflight
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	other other : other pilot : commercial pilot : instrument
Experience	flight time last 90 days : 75 flight time total : 4500 flight time type : 75
ASRS Report	356266
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : less severe other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : overcame equipment problem
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Upon landing at grr, maintenance was called regarding cabin address system, which malfunctioned during flight. Maintenance coordinator told crew item was deferrable as long as interphone system worked. My coordinator was told that chime was also inoperative and told crew that it was still deferrable. Despite objections of crew flight was dispatched to cvg. In-flight, several pertinent communications were required. Due to cabin duties, flight attendant couldn't be summoned (only call light on headset worked, no chime.) and once first officer had to open door to communicate. Red emergency light on call panels began flashing, even though no crew member pushed button. This caused unsafe communication situation, and distraction all crew members from duties.

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Original NASA ASRS Text

Title: FLC OF AN LTT WITH 33 PAX AND A FLT ATTENDANT, CABIN ADDRESS SYS WAS INOP AND DEFERRED AS ALLOWED IF THE CABIN COCKPIT INTERPHONE SYS WAS WORKING. FLC DID NOT LIKE THE INCONVENIENCE AND BELIEVED IT TO BE UNSAFE.

Narrative: UPON LNDG AT GRR, MAINT WAS CALLED REGARDING CABIN ADDRESS SYS, WHICH MALFUNCTIONED DURING FLT. MAINT COORDINATOR TOLD CREW ITEM WAS DEFERRABLE AS LONG AS INTERPHONE SYS WORKED. MY COORDINATOR WAS TOLD THAT CHIME WAS ALSO INOP AND TOLD CREW THAT IT WAS STILL DEFERRABLE. DESPITE OBJECTIONS OF CREW FLT WAS DISPATCHED TO CVG. INFLT, SEVERAL PERTINENT COMS WERE REQUIRED. DUE TO CABIN DUTIES, FLT ATTENDANT COULDN'T BE SUMMONED (ONLY CALL LIGHT ON HEADSET WORKED, NO CHIME.) AND ONCE FO HAD TO OPEN DOOR TO COMMUNICATE. RED EMER LIGHT ON CALL PANELS BEGAN FLASHING, EVEN THOUGH NO CREW MEMBER PUSHED BUTTON. THIS CAUSED UNSAFE COM SIT, AND DISTR ALL CREW MEMBERS FROM DUTIES.

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.