Heading track deviation when an air carrier FMS type aircraft is assigned another runway and the first officer, PF, appeared to have a difficult time in making the required FMS changes to comply with the new clearance, 40 mi east of lax, ca.

Home

Browse by month

Random

Latest

About

Contact

Attributes
ACN	563616
Time
Date	200210
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : pdz.vortac
State Reference	CA
Altitude	msl single value : 17000
Environment
Flight Conditions	IMC
Light	Dusk
Aircraft 1
Controlling Facilities	tracon : sct.tracon
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 2 Turbojet Eng
Operating Under FAR Part	Part 121
Navigation In Use	ils localizer only : 25l other
Flight Phase	descent : approach descent : intermediate altitude
Route In Use	approach : instrument non precision arrival star : pdz
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : cfi pilot : atp pilot : commercial pilot : flight engineer pilot : instrument pilot : multi engine pilot : private
Experience	flight time type : 60
ASRS Report	563616
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	non adherence : published procedure 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 : issued advisory flight crew : returned to intended or assigned course flight crew : overrode automation flight crew : became reoriented
Supplementary
Problem Areas	Flight Crew Human Performance Airspace Structure Airport ATC Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Descending into lax on the pdz 4 STAR, we were stepping down. Passing pdz, we set up runway 24R approach. The controller said unable approach. While passing the IAF turn (arnes), they had us expedite descent. Doing both rapidly got us behind, being task saturated. Being new to this FMS airplane didn't help the situation. Setting up the approach, checking each fix/course/altitude took a few moments to make sure we didn't execute anything incorrectly. Trying to decipher between what raw data said and the FMS gave us a moment of question. We ended up being just north of the runway 24R localizer, where turned back to a heading to reintercept runway 25L localizer. We tried to repos ourselves back into the line-up where we belonged. Approach control came back, gave us heading/altitude to rejoin runway 25L final course. At no point were we lost, too low or was safety in jeopardy. We were vectored back into line, descended on the approach as charted and landed without incident.

Original NASA ASRS Text

Title: HDG TRACK DEV WHEN AN ACR FMS TYPE ACFT IS ASSIGNED ANOTHER RWY AND THE FO, PF, APPEARED TO HAVE A DIFFICULT TIME IN MAKING THE REQUIRED FMS CHANGES TO COMPLY WITH THE NEW CLRNC, 40 MI E OF LAX, CA.

Narrative: DSNDING INTO LAX ON THE PDZ 4 STAR, WE WERE STEPPING DOWN. PASSING PDZ, WE SET UP RWY 24R APCH. THE CTLR SAID UNABLE APCH. WHILE PASSING THE IAF TURN (ARNES), THEY HAD US EXPEDITE DSCNT. DOING BOTH RAPIDLY GOT US BEHIND, BEING TASK SATURATED. BEING NEW TO THIS FMS AIRPLANE DIDN'T HELP THE SIT. SETTING UP THE APCH, CHKING EACH FIX/COURSE/ALT TOOK A FEW MOMENTS TO MAKE SURE WE DIDN'T EXECUTE ANYTHING INCORRECTLY. TRYING TO DECIPHER BTWN WHAT RAW DATA SAID AND THE FMS GAVE US A MOMENT OF QUESTION. WE ENDED UP BEING JUST N OF THE RWY 24R LOC, WHERE TURNED BACK TO A HDG TO REINTERCEPT RWY 25L LOC. WE TRIED TO REPOS OURSELVES BACK INTO THE LINE-UP WHERE WE BELONGED. APCH CTL CAME BACK, GAVE US HDG/ALT TO REJOIN RWY 25L FINAL COURSE. AT NO POINT WERE WE LOST, TOO LOW OR WAS SAFETY IN JEOPARDY. WE WERE VECTORED BACK INTO LINE, DSNDED ON THE APCH AS CHARTED AND LANDED WITHOUT INCIDENT.

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.