<< >> NASA ASRS Report 789688, June 2008

Both pilots engaged in reprogramming a late runway change while in descent results in altitude deviation for A319 inbound to lax.

Attributes
ACN	789688
Time
Date	200806
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : lax.airport
State Reference	CA
Altitude	msl single value : 10000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : sct.tracon
Operator	common carrier : air carrier
Make Model Name	A319
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	descent : intermediate altitude
Route In Use	arrival star : n/s
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	789688
Events
Anomaly	altitude deviation : crossing restriction not met altitude deviation : overshoot non adherence : published procedure
Independent Detector	other flight crewa
Resolutory Action	flight crew : returned to assigned altitude
Supplementary
Problem Areas	ATC Human Performance Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

ATC changed arrival runways while we were descending on the STAR. We were both consumed in reprogramming the FMC and failed to notice that the autopilot had defaulted to V/south. Before either of us noticed we had descended below a crossing restr. Follow SOP when reprogramming med information; always have the monitoring pilot monitoring the aircraft altitude and position.

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Original NASA ASRS Text

Title: BOTH PLTS ENGAGED IN REPROGRAMMING A LATE RWY CHANGE WHILE IN DSCNT RESULTS IN ALT DEV FOR A319 INBOUND TO LAX.

Narrative: ATC CHANGED ARR RWYS WHILE WE WERE DSNDING ON THE STAR. WE WERE BOTH CONSUMED IN REPROGRAMMING THE FMC AND FAILED TO NOTICE THAT THE AUTOPILOT HAD DEFAULTED TO V/S. BEFORE EITHER OF US NOTICED WE HAD DSNDED BELOW A CROSSING RESTR. FOLLOW SOP WHEN REPROGRAMMING MED INFORMATION; ALWAYS HAVE THE MONITORING PLT MONITORING THE ACFT ALTITUDE AND POSITION.

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.