A lear 25 flight turns to the wrong heading when the crew misinterps and reads back the wrong heading to the controller. The PNF first officer had an accent.

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Attributes
ACN	430030
Time
Date	199902
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : sat.vortac
State Reference	TX
Altitude	msl single value : 3000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : sat.tracon
Operator	common carrier : air carrier
Make Model Name	Learjet 25
Operating Under FAR Part	Part 135
Navigation In Use	other vortac
Flight Phase	descent : approach descent : intermediate altitude
Route In Use	arrival : on vectors arrival star : marcs five
Flight Plan	IFR
Person 1
Affiliation	company : air taxi
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : atp
Experience	flight time last 90 days : 120 flight time total : 7000 flight time type : 400
ASRS Report	430030
Person 2
Affiliation	company : air taxi
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial
Events
Anomaly	non adherence : clearance other anomaly other other spatial deviation
Independent Detector	atc equipment other atc equipment : radar other controllera
Resolutory Action	controller : issued new clearance controller : separated traffic controller : issued alert other
Supplementary
Problem Areas	Aircraft Flight Crew Human Performance ATC Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Had arrived on marcs 5 arrival to sat. Just crossed sat VOR with descent clearance to 3000 ft and given a heading to expect ILS runway 12R at sat. Crew understood new heading to be heading 200 and read heading 'two zero zero.' soon we received call from controller saying heading was to be 300 and climb immediately to 4000 ft. Copilot has accent. This may have contributed to the controller not catching the readback error of two zero zero. Since it was obvious to me we were overflying the approach and were to be vectored outbound for a new sequence, I called the controller to issue a low fuel advisory so that I might land with legal fuel minimums for IFR.

Original NASA ASRS Text

Title: A LEAR 25 FLT TURNS TO THE WRONG HDG WHEN THE CREW MISINTERPS AND READS BACK THE WRONG HDG TO THE CTLR. THE PNF FO HAD AN ACCENT.

Narrative: HAD ARRIVED ON MARCS 5 ARR TO SAT. JUST CROSSED SAT VOR WITH DSCNT CLRNC TO 3000 FT AND GIVEN A HDG TO EXPECT ILS RWY 12R AT SAT. CREW UNDERSTOOD NEW HDG TO BE HDG 200 AND READ HDG 'TWO ZERO ZERO.' SOON WE RECEIVED CALL FROM CTLR SAYING HDG WAS TO BE 300 AND CLB IMMEDIATELY TO 4000 FT. COPLT HAS ACCENT. THIS MAY HAVE CONTRIBUTED TO THE CTLR NOT CATCHING THE READBACK ERROR OF TWO ZERO ZERO. SINCE IT WAS OBVIOUS TO ME WE WERE OVERFLYING THE APCH AND WERE TO BE VECTORED OUTBOUND FOR A NEW SEQUENCE, I CALLED THE CTLR TO ISSUE A LOW FUEL ADVISORY SO THAT I MIGHT LAND WITH LEGAL FUEL MINIMUMS FOR IFR.

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.