<< >> NASA ASRS Report 794478, July 2008

B737-800 flight crew departing jfk notices; when queried; that their FMS database coordinates for squad do not match those on their flight plan.

Attributes
ACN	794478
Time
Date	200807
Local Time Of Day	0601 To 1200
Place
Locale Reference	intersection : squad
State Reference	FO
Altitude	msl single value : 33000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zny.artcc
Operator	common carrier : air carrier
Make Model Name	B737-800
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Route In Use	enroute : atlantic
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : multi engine pilot : flight engineer pilot : commercial pilot : atp pilot : instrument
Experience	flight time last 90 days : 140 flight time total : 8400 flight time type : 3000
ASRS Report	794478
Person 2
Affiliation	government : faa
Function	controller : radar
Events
Anomaly	aircraft equipment problem : less severe non adherence : clearance other spatial deviation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance
Supplementary
Problem Areas	Aircraft Flight Crew Human Performance
Primary Problem	Aircraft

Narrative:

On climb out of ny's jfk airport; aircraft cleared direct squad intersection. ATC asked aircraft to verify the coordinates for squad intersection. Pilot monitoring responded by reading the correct coordinates. Aircraft then began proceeding direct to squad intersection by FMS navigation. As the aircraft got closer to squad ATC cleared the aircraft to turn right 15 degrees. ATC then again asked the aircraft to verify the coordinates for squad intersection. During the verification process; it was determined that while the coordinates for squad contained in the flight plan were correct; the coordinates for squad contained in the FMS database were incorrect. ATC then cleared aircraft direct to the correct coordinates. No conflict or loss of separation with other aircraft was noted. Similar occurrences could be avoided in the future by ensuring that data entered in the periodically updated FMS database is correct. If queried by ATC; crews should verify all coordinates by using the FMS as the primary reference.

Related reports:

• A319 flight crew departing jfk notices when queried that the...
• Jfk runway 13L controller alerts runway 13R controller that ...

	Enter your search terms Submit search form
	Web www.37000feet.com

Original NASA ASRS Text

Title: B737-800 FLT CREW DEPARTING JFK NOTICES; WHEN QUERIED; THAT THEIR FMS DATABASE COORDINATES FOR SQUAD DO NOT MATCH THOSE ON THEIR FLT PLAN.

Narrative: ON CLB OUT OF NY'S JFK ARPT; ACFT CLEARED DIRECT SQUAD INTXN. ATC ASKED ACFT TO VERIFY THE COORDINATES FOR SQUAD INTXN. PLT MONITORING RESPONDED BY READING THE CORRECT COORDINATES. ACFT THEN BEGAN PROCEEDING DIRECT TO SQUAD INTXN BY FMS NAVIGATION. AS THE ACFT GOT CLOSER TO SQUAD ATC CLEARED THE ACFT TO TURN RIGHT 15 DEGS. ATC THEN AGAIN ASKED THE ACFT TO VERIFY THE COORDINATES FOR SQUAD INTXN. DURING THE VERIFICATION PROCESS; IT WAS DETERMINED THAT WHILE THE COORDINATES FOR SQUAD CONTAINED IN THE FLT PLAN WERE CORRECT; THE COORDINATES FOR SQUAD CONTAINED IN THE FMS DATABASE WERE INCORRECT. ATC THEN CLEARED ACFT DIRECT TO THE CORRECT COORDINATES. NO CONFLICT OR LOSS OF SEPARATION WITH OTHER ACFT WAS NOTED. SIMILAR OCCURRENCES COULD BE AVOIDED IN THE FUTURE BY ENSURING THAT DATA ENTERED IN THE PERIODICALLY UPDATED FMS DATABASE IS CORRECT. IF QUERIED BY ATC; CREWS SHOULD VERIFY ALL COORDINATES BY USING THE FMS AS THE PRIMARY REFERENCE.

Data retrieved from NASA's ASRS site as of May 2009 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.