An air carrier twin engine turbojet flight crew was dispatched to a foreign airport against their operations specifications because a required terminal VORTAC was OTS.

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Attributes
ACN	433835
Time
Date	199904
Day	Sun
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : sequ.airport
State Reference	FO
Environment
Flight Conditions	IMC
Weather Elements	Fog
Light	Night
Aircraft 1
Controlling Facilities	tower : sequ.tower
Operator	common carrier : air carrier
Make Model Name	B737-600, -700, -800
Operating Under FAR Part	Part 121
Navigation In Use	other vortac
Flight Phase	climbout : vacating altitude cruise : enroute altitude change descent : approach
Route In Use	departure : other published ifr departure
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 17000 flight time type : 3000
ASRS Report	433835
Person 2
Affiliation	company : air carrier
Function	flight crew : relief pilot
Qualification	pilot : atp pilot : flight engineer pilot : multi engine
Experience	flight time last 90 days : 228 flight time total : 11955 flight time type : 3665
ASRS Report	133840
Events
Anomaly	non adherence : company policies non adherence : far non adherence : published procedure
Independent Detector	other flight crewa other flight crewb
Resolutory Action	none taken : detected after the fact
Consequence	other
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Situations
Publication	Airline Operations Specifications

Narrative:

Flight was dispatched in error to quito, ecuador due to qms VOR being inoperative in violation of the operations specifications. Supplemental information from acn 433840: we departed mariscal surce international, quito, ecuador (sequ) with the monjas sur VOR OTS. The airline's departure page discusses the navigation requirements of qms VOR being operational for engine out procedures with the exception of the B737-700/800 with operable FMS. A technical clarification with the flight operations manual is needed for use of the FMS/GPS for such a procedure.

Original NASA ASRS Text

Title: AN ACR TWIN ENG TURBOJET FLC WAS DISPATCHED TO A FOREIGN ARPT AGAINST THEIR OPS SPECS BECAUSE A REQUIRED TERMINAL VORTAC WAS OTS.

Narrative: FLT WAS DISPATCHED IN ERROR TO QUITO, ECUADOR DUE TO QMS VOR BEING INOP IN VIOLATION OF THE OPS SPECS. SUPPLEMENTAL INFO FROM ACN 433840: WE DEPARTED MARISCAL SURCE INTL, QUITO, ECUADOR (SEQU) WITH THE MONJAS SUR VOR OTS. THE AIRLINE'S DEP PAGE DISCUSSES THE NAV REQUIREMENTS OF QMS VOR BEING OPERATIONAL FOR ENG OUT PROCS WITH THE EXCEPTION OF THE B737-700/800 WITH OPERABLE FMS. A TECHNICAL CLARIFICATION WITH THE FLT OPS MANUAL IS NEEDED FOR USE OF THE FMS/GPS FOR SUCH A PROC.

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.