Air carrier medium large transport flight crew experiences stuck microphone while on approach to lgb...

Attributes
ACN	176872
Time
Date	199104
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : lgb
State Reference	CA
Altitude	msl bound lower : 4000 msl bound upper : 6000
Environment
Flight Conditions	IMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : sna
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other
Flight Phase	descent : approach
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 8000
ASRS Report	176872
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : less severe other anomaly other other spatial deviation
Independent Detector	other controllera other flight crewa
Resolutory Action	flight crew : overcame equipment problem
Consequence	Other
Supplementary
Primary Problem	Navigational Facility
Air Traffic Incident	other

Narrative:

Just prior to descent, I asked the first officer to remind me to write up the captain's microphone. The guard was installed upside down. At 6000 descending to 4000', I made the 'prepare for landing' announcement on the P/a. At 4000' we crossed the localizer and I asked the first officer to call approach, with no response. Suspecting a failed VHF, we tried the other. As I checked in, approach was warning of an medium large transport at 4000', westbound with a stuck microphone, followed by 12 O'clock traffic 1000' below us to avoid conflict. Vectored to uneventful landing at lgb. I suggest the entire medium large transport and large transport fleets be checked and all guards installed correctly. Also, to find the individual who is turning those guards upside down and being suspension of license actions!

Original NASA ASRS Text

Title: ACR MLG FLT CREW EXPERIENCES STUCK MICROPHONE WHILE ON APCH TO LGB.

Narrative: JUST PRIOR TO DSNT, I ASKED THE F/O TO REMIND ME TO WRITE UP THE CAPT'S MIC. THE GUARD WAS INSTALLED UPSIDE DOWN. AT 6000 DSNDING TO 4000', I MADE THE 'PREPARE FOR LNDG' ANNOUNCEMENT ON THE P/A. AT 4000' WE CROSSED THE LOC AND I ASKED THE F/O TO CALL APCH, WITH NO RESPONSE. SUSPECTING A FAILED VHF, WE TRIED THE OTHER. AS I CHKED IN, APCH WAS WARNING OF AN MLG AT 4000', WBND WITH A STUCK MIC, FOLLOWED BY 12 O'CLOCK TFC 1000' BELOW US TO AVOID CONFLICT. VECTORED TO UNEVENTFUL LNDG AT LGB. I SUGGEST THE ENTIRE MLG AND LGT FLEETS BE CHKED AND ALL GUARDS INSTALLED CORRECTLY. ALSO, TO FIND THE INDIVIDUAL WHO IS TURNING THOSE GUARDS UPSIDE DOWN AND BEING SUSPENSION OF LICENSE ACTIONS!

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.