Flight crew of a B727 noticed an erroneous localizer deflection when they visually thought that they were on the ILS centerline. They were visual and changed to the other parallel runway for landing. Tower also questioned their approach. Flight crew thought it might have been caused by a parallel runway encroachment rather than their aircraft equipment?

Home

Browse by month

Random

Latest

About

Contact

Attributes
ACN	388231
Time
Date	199712
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : mco
State Reference	FL
Altitude	msl bound lower : 2500 msl bound upper : 2500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : mco tower : ord
Operator	common carrier : air carrier
Make Model Name	B727 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
ASRS Report	388231
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	388230
Events
Anomaly	aircraft equipment problem : less severe other anomaly other other spatial deviation
Independent Detector	other controllera other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	faa : reviewed incident with flight crew
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Being vectored to ILS runway 18R at mco from right base position at 2500 ft. Received clearance to head 150 degrees to intercept runway 18R ILS and cleared for the approach. Received full deflection and back on CDI. Continued heading 150 degrees, obtained runways visually and requested visual to runway 18L and it was granted. Once on tower frequency, tower asked which approach we were cleared for. Informed tower cleared for runway 18R ILS then a visual to runway 18L. Tower cleared us to land without further comment.

Original NASA ASRS Text

Title: FLC OF A B727 NOTICED AN ERRONEOUS LOC DEFLECTION WHEN THEY VISUALLY THOUGHT THAT THEY WERE ON THE ILS CTRLINE. THEY WERE VISUAL AND CHANGED TO THE OTHER PARALLEL RWY FOR LNDG. TWR ALSO QUESTIONED THEIR APCH. FLC THOUGHT IT MIGHT HAVE BEEN CAUSED BY A PARALLEL RWY ENCROACHMENT RATHER THAN THEIR ACFT EQUIP?

Narrative: BEING VECTORED TO ILS RWY 18R AT MCO FROM R BASE POS AT 2500 FT. RECEIVED CLRNC TO HEAD 150 DEGS TO INTERCEPT RWY 18R ILS AND CLRED FOR THE APCH. RECEIVED FULL DEFLECTION AND BACK ON CDI. CONTINUED HDG 150 DEGS, OBTAINED RWYS VISUALLY AND REQUESTED VISUAL TO RWY 18L AND IT WAS GRANTED. ONCE ON TWR FREQ, TWR ASKED WHICH APCH WE WERE CLRED FOR. INFORMED TWR CLRED FOR RWY 18R ILS THEN A VISUAL TO RWY 18L. TWR CLRED US TO LAND WITHOUT FURTHER COMMENT.

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.