Air carrier adv tech medium large transport flight crew fails to meet crossing restriction in descen...

Attributes
ACN	170605
Time
Date	199102
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : fim airport : lax
State Reference	CA
Altitude	msl bound lower : 19000 msl bound upper : 21000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zla
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	descent other
Route In Use	arrival : profile descent arrival other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 150 flight time total : 10000 flight time type : 130
ASRS Report	170605
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 8000 flight time type : 500
ASRS Report	170603
Events
Anomaly	aircraft equipment problem : less severe altitude deviation : crossing restriction not met altitude deviation : undershoot non adherence : published procedure non adherence : clearance
Independent Detector	other flight crewa
Resolutory Action	none taken : insufficient time
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

We were caught 2000' high at the filmore crossing on the lax runway 24/25 profile descent. From FL330 we were cleared to FL250. We set the lower altitude and using the FMC started a capture descent. Out of FL280 the controller issued clearance to FL240. The new altitude (FL240) was set on both the MCP and the FMC (cruise FL240). The first officer returned his FMC to the legs page. The captain's FMC was on the 'legs' page throughout the entire event. We were cleared for the profile descent at approximately FL255. The bottom altitude restriction at filmore (15000') was set in the MCP. The aircraft seemed to be on a normal descent path when I noticed we were 1 mi from filmore and still at FL210. We disconnected the autoplt and began a 6000 FPM descent. It is unknown why the FMC did not capture the planned descent. Supplemental information from acn 170603: the FMC had generated that crossing restriction when the profile descent was selected. FMC failed to capture planned descent. At 1 NM prior to fim VOR at FL210 I disconnected the autoplt and automatic throttle and started a 6000 FPM descent for the 15000-19000' restriction. I failed to make that restriction.

Original NASA ASRS Text

Title: ACR ADV TECH MLG FLT CREW FAILS TO MEET CROSSING RESTRICTION IN DESCENT.

Narrative: WE WERE CAUGHT 2000' HIGH AT THE FILMORE XING ON THE LAX RWY 24/25 PROFILE DSNT. FROM FL330 WE WERE CLRED TO FL250. WE SET THE LOWER ALT AND USING THE FMC STARTED A CAPTURE DSNT. OUT OF FL280 THE CTLR ISSUED CLRNC TO FL240. THE NEW ALT (FL240) WAS SET ON BOTH THE MCP AND THE FMC (CRUISE FL240). THE F/O RETURNED HIS FMC TO THE LEGS PAGE. THE CAPT'S FMC WAS ON THE 'LEGS' PAGE THROUGHOUT THE ENTIRE EVENT. WE WERE CLRED FOR THE PROFILE DSNT AT APPROX FL255. THE BOTTOM ALT RESTRICTION AT FILMORE (15000') WAS SET IN THE MCP. THE ACFT SEEMED TO BE ON A NORMAL DSNT PATH WHEN I NOTICED WE WERE 1 MI FROM FILMORE AND STILL AT FL210. WE DISCONNECTED THE AUTOPLT AND BEGAN A 6000 FPM DSNT. IT IS UNKNOWN WHY THE FMC DID NOT CAPTURE THE PLANNED DSNT. SUPPLEMENTAL INFO FROM ACN 170603: THE FMC HAD GENERATED THAT XING RESTRICTION WHEN THE PROFILE DSNT WAS SELECTED. FMC FAILED TO CAPTURE PLANNED DSNT. AT 1 NM PRIOR TO FIM VOR AT FL210 I DISCONNECTED THE AUTOPLT AND AUTO THROTTLE AND STARTED A 6000 FPM DSNT FOR THE 15000-19000' RESTRICTION. I FAILED TO MAKE THAT RESTRICTION.

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.

Air carrier adv tech medium large transport flight crew fails to meet crossing restriction in descent.