Near midair collision.

Attributes
ACN	292508
Time
Date	199412
Day	Wed
Place
Locale Reference	airport : pit
State Reference	PA
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : pit tower : anc
Operator	common carrier : air carrier
Make Model Name	Fokker 100
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	descent other
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Operator	general aviation : personal
Make Model Name	Cessna Single Piston Undifferentiated or Other Model
Operating Under FAR Part	Part 91
Flight Phase	cruise other
Flight Plan	VFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	292508
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : less severe non adherence : clearance other anomaly other other spatial deviation
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation
Situations
ATC Facility	procedure or policy : unspecified

Narrative:

During approach to pit we were being vectored to final and told to descend to 2500 ft. In the turn the first officer and the jumpseat rider both spotted a cessna at approximately the same altitude as us. We stopped our descent and stopped our turn. At this time I tried to call approach control and tell them we would be flying through final for traffic avoidance. TCASII started yelling, approach started yelling and we were unable to hear approach because of the TCASII volume. We never got a call from approach about traffic and if our jumpseat rider had not called out the traffic I'm not sure we would have missed the cessna as it was right in the sun from the captain and first officer perspective. TCASII volume added to the confusion because it was too loud and overpwred the volume of the radio.

Original NASA ASRS Text

Title: NMAC.

Narrative: DURING APCH TO PIT WE WERE BEING VECTORED TO FINAL AND TOLD TO DSND TO 2500 FT. IN THE TURN THE FO AND THE JUMPSEAT RIDER BOTH SPOTTED A CESSNA AT APPROX THE SAME ALT AS US. WE STOPPED OUR DSCNT AND STOPPED OUR TURN. AT THIS TIME I TRIED TO CALL APCH CTL AND TELL THEM WE WOULD BE FLYING THROUGH FINAL FOR TFC AVOIDANCE. TCASII STARTED YELLING, APCH STARTED YELLING AND WE WERE UNABLE TO HEAR APCH BECAUSE OF THE TCASII VOLUME. WE NEVER GOT A CALL FROM APCH ABOUT TFC AND IF OUR JUMPSEAT RIDER HAD NOT CALLED OUT THE TFC I'M NOT SURE WE WOULD HAVE MISSED THE CESSNA AS IT WAS RIGHT IN THE SUN FROM THE CAPT AND FO PERSPECTIVE. TCASII VOLUME ADDED TO THE CONFUSION BECAUSE IT WAS TOO LOUD AND OVERPWRED THE VOLUME OF THE RADIO.

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.