ASN Wikibase Occurrence # 358588
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| Date: | Tuesday 25 July 1995 |
| Time: | 09:24 LT |
| Type: |  Avro RJ70 |
| Owner/operator: | Business Express Airlines |
| Registration: | N833BE |
| MSN: | E1224 |
| Total airframe hrs: | 2917 hours |
| Engine model: | LYCOMING LF-507-1F |
| Fatalities: | Fatalities: 0 / Occupants: 24 |
| Aircraft damage: | None |
| Category: | Serious incident |
| Location: | New York, NY -
 United States of America
|
| Phase: | Approach |
| Nature: | Unknown |
| Departure airport: | Cleveland, OH (KCLE) |
| (KJFK) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The Avro RJ-70 was on approach, about 1500 ft agl, with the auto-pilot engaged, when it encountered wake turbulence from a preceding Airbus 340 and rolled left. The flying pilot, who occupied the right seat, reached for the yoke to disconnect the auto-pilot and to apply corrective aileron input. He applied large and/or abrupt movement of the ailerons before achieving an auto-pilot disconnect. The ailerons uncoupled, after which, the pilot continued with the approach and landed without further incident. A postincident test revealed that the breakaway forces for the aileron interconnect detent strut were within the manufacturer's specification. The manufacturer reported that movement of the aileron flight controls from the side opposite of the engaged auto-pilot servo could result in an aileron uncoupling. Once uncoupled, the left yoke controlled the left aileron and roll spoiler, and the right yoke controlled the right aileron and roll spoiler.
Probable Cause: the aileron interconnect became uncoupled, when an abrupt and/or large aileron movement was made in response to a wake turbulence encounter, while on a VOR approach with the autopilot engaged. A factor relating to the incident was: inadequate in-flight planning/decision by the aircrew, which allowed the wake turbulence encounter.
Accident investigation:
 |
|
Sources:
NTSB NYC95IA178
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 14-Mar-2024 16:00 | ASN Update Bot | Added |
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