An air carrier B757 flight crew reports a conflict with a military F15 fighter while descending for ...

Attributes
ACN	431809
Time
Date	199903
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : den.airport
State Reference	CO
Altitude	msl single value : 13000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : d01.tracon
Operator	common carrier : air carrier
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	descent : intermediate altitude
Route In Use	arrival : on vectors
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : d01.tracon
Operator	other
Make Model Name	Eagle (F-15)
Operating Under FAR Part	Part 91
Navigation In Use	other
Route In Use	arrival : 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 : 100 flight time total : 16000
ASRS Report	431809
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 100 flight time total : 7400 flight time type : 1000
ASRS Report	431663
Events
Anomaly	altitude deviation : overshoot conflict : airborne less severe non adherence : clearance non adherence : far
Independent Detector	aircraft equipment : tcas other flight crewa
Resolutory Action	controller : issued advisory flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew Other
Miss Distance	horizontal : 3000 vertical : 500
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Arrival at den. Wbound at 13000 ft level flight, copilot flying. TCASII warning 'descend.' first officer tripped off autoplt and started down. I looked at HSI and saw target, 1-2 O'clock position, with descend arrow at 14700 ft then 14500 ft. I called ATC and said, following TCASII down warning. Controller said it was not necessary. Traffic was rapidly descending F15 to level at 14000 ft. I had a jump seat rider. He saw traffic at 1 O'clock position. I looked at aircraft, felt he was almost our altitude, looked at HSI, traffic showed 13400 ft. Looked up as traffic went from 12 O'clock position to 9 O'clock position. I was looking right up his tail pipes and he was climbing rapidly. I told controller this 'was unacceptable.' he said, 'I know sir, he busted his altitude.' continued to uneventful landing. Called approach control and filed near miss. We only descended 150-200 ft. Very fast situation. Over in seconds.

Original NASA ASRS Text

Title: AN ACR B757 FLC RPTS A CONFLICT WITH A MIL F15 FIGHTER WHILE DSNDING FOR A VISUAL APCH.

Narrative: ARR AT DEN. WBOUND AT 13000 FT LEVEL FLT, COPLT FLYING. TCASII WARNING 'DSND.' FO TRIPPED OFF AUTOPLT AND STARTED DOWN. I LOOKED AT HSI AND SAW TARGET, 1-2 O'CLOCK POS, WITH DSND ARROW AT 14700 FT THEN 14500 FT. I CALLED ATC AND SAID, FOLLOWING TCASII DOWN WARNING. CTLR SAID IT WAS NOT NECESSARY. TFC WAS RAPIDLY DSNDING F15 TO LEVEL AT 14000 FT. I HAD A JUMP SEAT RIDER. HE SAW TFC AT 1 O'CLOCK POS. I LOOKED AT ACFT, FELT HE WAS ALMOST OUR ALT, LOOKED AT HSI, TFC SHOWED 13400 FT. LOOKED UP AS TFC WENT FROM 12 O'CLOCK POS TO 9 O'CLOCK POS. I WAS LOOKING RIGHT UP HIS TAIL PIPES AND HE WAS CLBING RAPIDLY. I TOLD CTLR THIS 'WAS UNACCEPTABLE.' HE SAID, 'I KNOW SIR, HE BUSTED HIS ALT.' CONTINUED TO UNEVENTFUL LNDG. CALLED APCH CTL AND FILED NEAR MISS. WE ONLY DSNDED 150-200 FT. VERY FAST SIT. OVER IN SECONDS.

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.

An air carrier B757 flight crew reports a conflict with a military F15 fighter while descending for a visual approach.