ASN Wikibase Occurrence # 367117
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| Date: | Friday 20 April 1990 |
| Time: | 16:00 LT |
| Type: |  Beechcraft F33A |
| Owner/operator: | Delta Delta Partnership |
| Registration: | N179DD |
| MSN: | CE743 |
| Total airframe hrs: | 3886 hours |
| Engine model: | CONTINENTAL IO-520-BA |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Milwaukee, WI -
 United States of America
|
| Phase: | Approach |
| Nature: | Executive |
| Departure airport: | Fargo, ND (KFAR) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PILOT ENGAGED THE AUTOPILOT APPROACH MODE TO EXECUTE A COUPLED ILS APPROACH WHILE HE WAS HIGH AND FAST WITH A 2000 FOOT PER MINUTE RATE OF DESCENT. THIS WAS OUTSIDE THE PARAMETERS FOR A STABILIZED APPROACH. WHEN THE AUTOPILOT CAPTURED THE GLIDE SLOPE, THE AIRCRAFT NOSED OVER SHARPLY, FLEW THROUGH THE GLIDE SLOPE, PULLED UP SHARPLY, FLEW THROUGH THE GLIDE SLOPE GOING UP, AND NOSED OVER AGAIN BEFORE THE PILOT COULD DISENGAGE THE AUTOPILOT. PILOT LANDED THE AIRCRAFT WITHOUT FURTHER INCIDENT, BUT THE PITCH EXCURSIONS HAD EXCEEDED THE STRESS LIMITS OF THE AIRCRAFT.
Probable Cause: THE UTILIZATION OF IMPROPER PROCEDURES ON THE PART OF THE PILOT IN COMMAND BY ATTEMPTING TO EXECUTE A COUPLED APPROACH OUTSIDE THE PARAMETERS OF THE AUTOPILOT.
Accident investigation:
 |
|
Sources:
NTSB CHI90LA115
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 22-Mar-2024 07:41 | ASN Update Bot | Added |
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