MD80 crew was given a 110 degree intercept for the ILS. The crew had an overshoot as a result.

Attributes
ACN	516390
Time
Date	200106
Day	Fri
Place
Locale Reference	airport : pit.airport
State Reference	PA
Altitude	msl bound lower : 4700 msl bound upper : 5000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	MD-80 Series (DC-9-80) Undifferentiated or Other Model
Flight Phase	descent : approach
Route In Use	arrival : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial pilot : multi engine pilot : atp
Experience	flight time last 90 days : 200 flight time total : 14000 flight time type : 4000
ASRS Report	516390
Events
Anomaly	other spatial deviation
Resolutory Action	controller : issued alert flight crew : overrode automation
Miss Distance	vertical : 700
Supplementary
Problem Areas	Flight Crew Human Performance ATC Human Performance
Primary Problem	Ambiguous
Air Traffic Incident	Pilot Deviation other

Narrative:

From 170 degree heading, was cleared to intercept runway 28R localizer, maintain 5000 ft until established, cleared for runway 28R ILS. This 110 degree overshoot caused the autoplt to overshoot the localizer, but return to reintercept the localizer. Autoplt was clicked off to prevent large over corrections and altitude decreased to 4700 ft. ATC issued sharp command to return to 5000 ft as there was a simultaneous approach to runway 28C circle to runway 28L in progress. When traffic was called, we saw an F100 below us (4000 ft?) to the left. We maintained visual contact at all times. Not sure if we burst ATC's bubble or not.

Original NASA ASRS Text

Title: MD80 CREW WAS GIVEN A 110 DEG INTERCEPT FOR THE ILS. THE CREW HAD AN OVERSHOOT AS A RESULT.

Narrative: FROM 170 DEG HDG, WAS CLRED TO INTERCEPT RWY 28R LOC, MAINTAIN 5000 FT UNTIL ESTABLISHED, CLRED FOR RWY 28R ILS. THIS 110 DEG OVERSHOOT CAUSED THE AUTOPLT TO OVERSHOOT THE LOC, BUT RETURN TO REINTERCEPT THE LOC. AUTOPLT WAS CLICKED OFF TO PREVENT LARGE OVER CORRECTIONS AND ALT DECREASED TO 4700 FT. ATC ISSUED SHARP COMMAND TO RETURN TO 5000 FT AS THERE WAS A SIMULTANEOUS APCH TO RWY 28C CIRCLE TO RWY 28L IN PROGRESS. WHEN TFC WAS CALLED, WE SAW AN F100 BELOW US (4000 FT?) TO THE L. WE MAINTAINED VISUAL CONTACT AT ALL TIMES. NOT SURE IF WE BURST ATC'S BUBBLE OR NOT.

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.