Close proximity air carrier large transport on approach to sea and GA small transport in traffic at ...

Attributes
ACN	158906
Time
Date	199009
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : sea
State Reference	WA
Altitude	msl bound lower : 1100 msl bound upper : 1500
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	tower : sea
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	descent other
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Make Model Name	Small Transport
Flight Phase	other
Flight Plan	VFR
Person 1
Affiliation	company : air carrier
Function	flight crew : second officer
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 200 flight time total : 4800
ASRS Report	158906
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 142 flight time total : 6500
ASRS Report	158855
Events
Anomaly	altitude deviation : overshoot conflict : nmac non adherence : clearance other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 0 vertical : 500
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

While on final approach to sea 16R (approximately 2.5 mi) observed an small transport heading northwest pass approximately 500' below us. First officer (flying) added power and climbed to increase sep maintaining confign for landing. After passing over small transport we continued approach, landing normally. Sea tower, when notified of the occurrence, reported that he had just gotten off the phone and the aircraft had us in sight. The captain called the tower after parking and was told that the small transport was flying in the pattern at bfi. Told to make right downwind pattern at or below 800' inside of the river immediately south of bfi. The controller reported that the small transport pilot was at 1100' and south of the river. WX at bfi was marginal VFR. At no time did a collision appear imminent. Evasive action helped to ensure adequate sep.

Original NASA ASRS Text

Title: CLOSE PROX ACR LGT ON APCH TO SEA AND GA SMT IN TRAFFIC AT BFI.

Narrative: WHILE ON FINAL APCH TO SEA 16R (APPROX 2.5 MI) OBSERVED AN SMT HDG NW PASS APPROX 500' BELOW US. F/O (FLYING) ADDED PWR AND CLBED TO INCREASE SEP MAINTAINING CONFIGN FOR LNDG. AFTER PASSING OVER SMT WE CONTINUED APCH, LNDG NORMALLY. SEA TWR, WHEN NOTIFIED OF THE OCCURRENCE, RPTED THAT HE HAD JUST GOTTEN OFF THE PHONE AND THE ACFT HAD US IN SIGHT. THE CAPT CALLED THE TWR AFTER PARKING AND WAS TOLD THAT THE SMT WAS FLYING IN THE PATTERN AT BFI. TOLD TO MAKE RIGHT DOWNWIND PATTERN AT OR BELOW 800' INSIDE OF THE RIVER IMMEDIATELY S OF BFI. THE CTLR RPTED THAT THE SMT PLT WAS AT 1100' AND S OF THE RIVER. WX AT BFI WAS MARGINAL VFR. AT NO TIME DID A COLLISION APPEAR IMMINENT. EVASIVE ACTION HELPED TO ENSURE ADEQUATE SEP.

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.

Close proximity air carrier large transport on approach to sea and GA small transport in traffic at bfi.