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19970331010609I

Incident
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FAA incident report · Dhav DHC8102 · Charlottesville, VA · March 31, 1997

FAA Aviation Safety Information Portal

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Date
March 31, 1997 · 13:42 local
Place
Charlottesville, VA
Airport
Charlottesville-Albemarle
Phase of flight
Final Approach
Operating rules
Air carrier (Part 121)
Operator
HNAA
Aircraft
N923HA
Reported as
Dhav DHC8102
People aboard
2
Fatal injuries
0
Pilot’s flight hours
8,015 total5,440 in this make and model

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry by N-number and event date, checked against the reported make and model; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

Narrative: flight 3266 from bal to cho experienced a control disconnect on final approach to cho. In turbulence this is identical to the incident that occurred in pit on 02-21-97 (IEA07970023). Aircraft N923HA was involved in both incidents. To correct the second incident, piedmont rerigged that roll disconnect system. On 04-01-97 piedmont was asked to voluntarily ground aircraft N923HA and to perform another inspection and replace the clutch spring. They grounded the aircraft and inspected it and replaced the clutch spring, torque tube bearing, and disconnect return spring. The aircraft was then released to service. On 04-09-97 NTSB investigator bob hancock requested that several additional checks be performed on piedmont aircraft N923HA. Since I was going to be in sby on 04-11-97, I elected to oversee these checks. The result of the checks were negative. I was not able to achieve an uncommanded roll control separation. This problem is still being studied by piedmont, bombordier aircraft of Canada, and the NTSB.

As the FAA filed it

NARRATIVE: FLIGHT 3266 FROM BAL TO CHO EXPERIENCED A CONTROL DISCONNECT ON FINAL APPROACH TO CHO. IN TURBULENCE THIS IS IDENTICAL TO THE INCIDENT THAT OCCURRED IN PIT ON 02-21-97 (IEA07970023). AIRCRAFT N923HA WAS INVOLVED IN BOTH INCIDENTS. TO CORRECT THE SECOND INCIDENT, PIEDMONT RERIGGED THAT ROLL DISCONNECT SYSTEM. ON 04-01-97 PIEDMONT WAS ASKED TO VOLUNTARILY GROUND AIRCRAFT N923HA AND TO PERFORM ANOTHER INSPECTION AND REPLACE THE CLUTCH SPRING. THEY GROUNDED THE AIRCRAFT AND INSPECTED IT AND REPLACED THE CLUTCH SPRING, TORQUE TUBE BEARING, AND DISCONNECT RETURN SPRING. THE AIRCRAFT WAS THEN RELEASED TO SERVICE. ON 04-09-97 NTSB INVESTIGATOR BOB HANCOCK REQUESTED THAT SEVERAL ADDITIONAL CHECKS BE PERFORMED ON PIEDMONT AIRCRAFT N923HA. SINCE I WAS GOING TO BE IN SBY ON 04-11-97, I ELECTED TO OVERSEE THESE CHECKS. THE RESULT OF THE CHECKS WERE NEGATIVE. I WAS NOT ABLE TO ACHIEVE AN UNCOMMANDED ROLL CONTROL SEPARATION. THIS PROBLEM IS STILL BEING STUDIED BY PIEDMONT, BOMBORDIER AIRCRAFT OF CANADA, AND THE NTSB.