An air carrier medium large transport flight crew reports that an FAA air carrier inspector rode in their jump seat with a known inoperative oxygen mask microphone. For operational purposes the mask was considered unusable. However, the inspector and the captain agreed that it was permissible to disregard the mask problem.

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Attributes
ACN	383679
Time
Date	199710
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : stl
State Reference	MO
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	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	ground : preflight
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : cfi pilot : flight engineer pilot : commercial pilot : instrument
Experience	flight time last 90 days : 200 flight time total : 6200 flight time type : 430
ASRS Report	383679
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : less severe non adherence : far non adherence : published procedure other anomaly other
Independent Detector	other flight crewa other other : unspecified
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Supplementary
Air Traffic Incident	other

Narrative:

FAA inspector wanted to situation in jump seat. Oxygen mask microphone inoperative (jump seat considered unusable). I pointed this out to the captain and FAA. The FAA guy said he really wanted to check out the operation. The captain let him. This is a very uncomfortable situation for all. I was afraid if I raised too much more of a fuss I'd get myself in trouble.

Original NASA ASRS Text

Title: AN ACR MLG FLC RPTS THAT AN FAA ACR INSPECTOR RODE IN THEIR JUMP SEAT WITH A KNOWN INOP OXYGEN MASK MIKE. FOR OPERATIONAL PURPOSES THE MASK WAS CONSIDERED UNUSABLE. HOWEVER, THE INSPECTOR AND THE CAPT AGREED THAT IT WAS PERMISSIBLE TO DISREGARD THE MASK PROB.

Narrative: FAA INSPECTOR WANTED TO SIT IN JUMP SEAT. OXYGEN MASK MIKE INOP (JUMP SEAT CONSIDERED UNUSABLE). I POINTED THIS OUT TO THE CAPT AND FAA. THE FAA GUY SAID HE REALLY WANTED TO CHK OUT THE OP. THE CAPT LET HIM. THIS IS A VERY UNCOMFORTABLE SIT FOR ALL. I WAS AFRAID IF I RAISED TOO MUCH MORE OF A FUSS I'D GET MYSELF IN TROUBLE.

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.