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The pilot and instructor of a PA34 experienced a premature descent when the autopilot had not yet captured the glideslope. The instructor advised a climb just prior to ATC reporting an altitude alert.
| Attributes | |
| ACN | 1259318 |
| Time | |
| Date | 201505 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | LGB.Airport |
| State Reference | CA |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | PA-34-200 Seneca I |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Initial Approach |
| Route In Use | Other ILS |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Autopilot |
| Person 1 | |
| Function | Instructor Pilot Not Flying |
| Qualification | Flight Crew Flight Instructor Flight Crew Instrument Flight Crew Commercial Flight Crew Multiengine |
| Experience | Flight Crew Last 90 Days 24 Flight Crew Total 1210 Flight Crew Type 100 |
| Events | |
| Anomaly | Deviation - Altitude Excursion From Assigned Altitude Deviation - Procedural Clearance Inflight Event / Encounter CFTT / CFIT |
Narrative:
I was instructing an instrument student and was cleared to intercept the ILS. I armed the approach on the autopilot and when the autopilot commanded a turn to final we started to descend. I was expecting the autopilot to descend and did not check immediately that we were on glideslope. When I saw we did not have the glideslope and our position; I instructed the student to climb and at that time ATC reported an altitude alert and directed a climb.
Original NASA ASRS Text
Title: The pilot and instructor of a PA34 experienced a premature descent when the autopilot had not yet captured the glideslope. The instructor advised a climb just prior to ATC reporting an altitude alert.
Narrative: I was instructing an instrument student and was cleared to intercept the ILS. I armed the approach on the autopilot and when the autopilot commanded a turn to final we started to descend. I was expecting the autopilot to descend and did not check immediately that we were on glideslope. When I saw we did not have the glideslope and our position; I instructed the student to climb and at that time ATC reported an altitude alert and directed a climb.
Data retrieved from NASA's ASRS site 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.