 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
B737-300 crew may not have complied with altitude and speed crossing requirements as given by the ATCT radar controller on the sadde 6 into lax.
| Attributes | |
| ACN | 566296 |
| Time | |
| Date | 200211 |
| Day | Sat |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | intersection : sadde |
| State Reference | CA |
| Altitude | msl single value : 12000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zla.artcc tower : lax.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Route In Use | arrival star : sadde 6 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 12000 flight time type : 6400 |
| ASRS Report | 566296 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | altitude deviation : undershoot non adherence : far non adherence : published procedure other anomaly other anomaly other |
| Independent Detector | atc equipment other atc equipment : radar other controllera other flight crewa other flight crewb |
| Resolutory Action | controller : issued new clearance none taken : detected after the fact |
| Consequence | other |
| Supplementary | |
| Problem Areas | Aircraft Flight Crew Human Performance Company FAA |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
CDU programming. On sadde 6 arrival to lax, we were given symon intersection at 12000 ft, 250 KTS. I apparently put sadde at 12000 ft, 250 KTS probably because of seeing 250 KTS at sadde on chart. This occurred while first officer was off getting the ATIS. Began the descent as programmed in CDU, which would now have me too high at symon. Sometime later, we were given the common clearance of 'descend and maintain 10000 ft, 250 KTS.' I think this was prior to symon, but it may have been after -- hence, this report. This clearance was given while the first officer was now off getting a gate. Breaking out of the clouds, we appeared higher to me than normal, and then I discovered the problem. Contributing factors: once again an error occurred when the clearance given was different than what appears on the STAR or SID. Also, it seems like many of these types of errors occur when 1 pilot is off the ATC frequency. This is always at a busy time (opc, checklists, turbulence, altitude changes, course changes, frequency changes, traffic, passenger connects, pfc cannot verify CDU change, etc). My kingdom for commercial radio!
Original NASA ASRS Text
Title: B737-300 CREW MAY NOT HAVE COMPLIED WITH ALT AND SPD XING REQUIREMENTS AS GIVEN BY THE ATCT RADAR CTLR ON THE SADDE 6 INTO LAX.
Narrative: CDU PROGRAMMING. ON SADDE 6 ARR TO LAX, WE WERE GIVEN SYMON INTXN AT 12000 FT, 250 KTS. I APPARENTLY PUT SADDE AT 12000 FT, 250 KTS PROBABLY BECAUSE OF SEEING 250 KTS AT SADDE ON CHART. THIS OCCURRED WHILE FO WAS OFF GETTING THE ATIS. BEGAN THE DSCNT AS PROGRAMMED IN CDU, WHICH WOULD NOW HAVE ME TOO HIGH AT SYMON. SOMETIME LATER, WE WERE GIVEN THE COMMON CLRNC OF 'DSND AND MAINTAIN 10000 FT, 250 KTS.' I THINK THIS WAS PRIOR TO SYMON, BUT IT MAY HAVE BEEN AFTER -- HENCE, THIS RPT. THIS CLRNC WAS GIVEN WHILE THE FO WAS NOW OFF GETTING A GATE. BREAKING OUT OF THE CLOUDS, WE APPEARED HIGHER TO ME THAN NORMAL, AND THEN I DISCOVERED THE PROB. CONTRIBUTING FACTORS: ONCE AGAIN AN ERROR OCCURRED WHEN THE CLRNC GIVEN WAS DIFFERENT THAN WHAT APPEARS ON THE STAR OR SID. ALSO, IT SEEMS LIKE MANY OF THESE TYPES OF ERRORS OCCUR WHEN 1 PLT IS OFF THE ATC FREQ. THIS IS ALWAYS AT A BUSY TIME (OPC, CHKLISTS, TURB, ALT CHANGES, COURSE CHANGES, FREQ CHANGES, TFC, PAX CONNECTS, PFC CANNOT VERIFY CDU CHANGE, ETC). MY KINGDOM FOR COMMERCIAL RADIO!
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.