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ILS runway 25L lax, aircraft coupled for an ILS approach and commenced flying the GS, but didn't make crossing restr at hunda. Reporter captain recognized that they were descending below crossing altitude and disconnected the autoplt and after hunda, started down on the GS.
| Attributes | |
| ACN | 344670 |
| Time | |
| Date | 199608 |
| Day | Sat |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : lax |
| State Reference | CA |
| Altitude | msl bound lower : 3300 msl bound upper : 3500 |
| Environment | |
| Flight Conditions | IMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : lax |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : commercial pilot : atp pilot : cfi pilot : instrument |
| Experience | flight time last 90 days : 200 flight time total : 8600 flight time type : 60 |
| ASRS Report | 344670 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | altitude deviation : crossing restriction not met altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Socal approach vectored us to intercept the localizer to runway 25L at lax just outside of hunda intersection at about 14 DME and told us to maintain 3500 ft till crossing hunda, cleared for ILS to runway 25L. I coupled the approach to the autoplt at this time. We intercepted the GS and started down. We were at about 3500 ft when I noticed that we were still about a mi outside of hunda. I immediately kicked off the autoplt and maintained altitude when I realized that the GS did not coincide with the crossing altitudes on the chart until within 10 mi DME. Once we passed hunda I continued our descent from 3300 ft and completed the approach. The ATIS had mentioned that the GS was unusable outside of 10 mi DME and we had just forgotten this fact in the hectic busy lax environment. It won't happen again I can assure you.
Original NASA ASRS Text
Title: ILS RWY 25L LAX, ACFT COUPLED FOR AN ILS APCH AND COMMENCED FLYING THE GS, BUT DIDN'T MAKE XING RESTR AT HUNDA. RPTR CAPT RECOGNIZED THAT THEY WERE DSNDING BELOW XING ALT AND DISCONNECTED THE AUTOPLT AND AFTER HUNDA, STARTED DOWN ON THE GS.
Narrative: SOCAL APCH VECTORED US TO INTERCEPT THE LOC TO RWY 25L AT LAX JUST OUTSIDE OF HUNDA INTXN AT ABOUT 14 DME AND TOLD US TO MAINTAIN 3500 FT TILL XING HUNDA, CLRED FOR ILS TO RWY 25L. I COUPLED THE APCH TO THE AUTOPLT AT THIS TIME. WE INTERCEPTED THE GS AND STARTED DOWN. WE WERE AT ABOUT 3500 FT WHEN I NOTICED THAT WE WERE STILL ABOUT A MI OUTSIDE OF HUNDA. I IMMEDIATELY KICKED OFF THE AUTOPLT AND MAINTAINED ALT WHEN I REALIZED THAT THE GS DID NOT COINCIDE WITH THE XING ALTS ON THE CHART UNTIL WITHIN 10 MI DME. ONCE WE PASSED HUNDA I CONTINUED OUR DSCNT FROM 3300 FT AND COMPLETED THE APCH. THE ATIS HAD MENTIONED THAT THE GS WAS UNUSABLE OUTSIDE OF 10 MI DME AND WE HAD JUST FORGOTTEN THIS FACT IN THE HECTIC BUSY LAX ENVIRONMENT. IT WON'T HAPPEN AGAIN I CAN ASSURE YOU.
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.