CEN10TA194

NTSB accident investigation · Beech 95-B55 · Center, ND · April 7, 2010

Accident · Serious injuriesFinal report
Date
April 6, 2010, 21:51 local (Apr 7, 2010, 02:51 UTC)
Place
Center, ND
Injuries
1 serious, 1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N70283Beech 95-B55
Defining event
Enroute-descent: Birdstrike
Weather
Visual (VMC) · Night/dark
Status
Completed · report August 12, 2010
Report
Approved by Office Director
NTSB office
Central Region
Parties
Federal Aviation Administration - Fargo FSDO
FAA report
20100406030999A
Case key
75678

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

The inadvertent in-flight collision with several Mallard ducks.

Findings · 2

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Object/animal/substance: animal(s)/bird(s)Environmental issues › Physical environment · Effect on equipmentBeech 95-B55: 1 caseAll aircraft: 358 casesProbable cause
Object/animal/substance: animal(s)/bird(s)Environmental issues › Physical environment · Effect on personnelBeech 95-B55: 1 caseAll aircraft: 358 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

The airplane collided with several Mallard ducks during an instructional flight in night visual meteorological conditions. The pilot-in-command reported that, as the airplane was descending through 4,200 feet, he heard a “loud pop” and felt a “violent rush of air.” The flight instructor, seated in the right seat, sustained serious injuries when one duck penetrated the right cockpit windshield and struck his face. The pilot-in-command seated in the left seat was not injured. The flight crew decided to return to the departure airport and made an uneventful landing. A postaccident inspection revealed that the airplane had received substantial structural damage to the right wing leading edge. All observed damage to the windshield and nose cone was consistent with the airplane colliding with several birds during flight.

Factual narrative

On April 6, 2010, at 2151 central daylight time, a Beech 95-B55, N70283, sustained substantial damage when it impacted several Mallard ducks during cruise flight at 4,200 feet over Center, North Dakota. Night visual meteorological conditions prevailed at the time of the accident. The flight instructor, seated in the right seat, sustained serious injuries when one duck penetrated the right cockpit windshield and struck his face. The pilot-in-command seated in the left seat was not injured. The flight was being operated by the State of North Dakota Attorney General’s Office as a public-use flight. The instructional flight departed Bismarck Municipal Airport (KBIS), Bismarck, North Dakota, at 2025, and was enroute to Mercer County Regional Airport (KHZE), Hazen, North Dakota. After the bird strike, the pilot-in-command diverted back to the departure airport and made an uneventful landing. At the time of the bird strike, the pilot-in-command was flying while using a view-limiting device to simulate instrument meteorological conditions. He reported that as the airplane was descending through 4,200 feet, he heard a “loud pop” and felt a “violent rush of air”. After the bird strike, there were several large portions of the right windshield missing and the flight instructor was bleeding from his face. The flight crew decided to return to KBIS instead of continuing to KHZE. The PIC declared an emergency with Bismarck approach control and requested that an ambulance meet the airplane after landing. A post-accident inspection revealed that the airplane had received substantial structural damage to the right cockpit windshield, right wing leading edge, and nose cone. All observed damage was consistent with the airplane colliding with several birds during flight.

Aircraft

Registration
N70283
Reported as
Beech 95-B55
Category
Airplane
Serial number
TF45
Airframe hours
11,093
Engines
Teledyne Continental Motors IO-470-L, 260 horsepower, reciprocatingTeledyne Continental Motors IO-470-L, 260 horsepower, reciprocating
Damage
Substantial damage
Flight
Public aircraft - state · Public use
Operator
North Dakota Attorney General
Registered owner
North Dakota Attorney General
Airworthiness certificate
Standard, Normal
Last inspection
Annual · September 18, 2009
Departed
KBIS · Bismarck, ND
Destination
KHZE · Hazen, ND

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew · 2

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
49
Injuries
None
Certificate
Private
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 3, With waivers/limitations
Last flight review
June 8, 2009
Seat
Left
Flight hours
1,335 total · 1,147 in this make and model · 2 in the last 90 days · 2 in the last 30 days · 2 in the last 24 hours
Role
Flight instructor
Age
61
Injuries
Serious
Certificate
Airline transport
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
July 25, 2008
Seat
Right
Flight hours
8,279 total · 90 in this make and model · 22 in the last 90 days · 2 in the last 30 days · 0 in the last 24 hours

Weather

Conditions
Visual (VMC) · Night/dark
Wind
50° at 5 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
41 °F, dew point 30 °F
Altimeter
29.96 inHg
Observed at
KBIS, 32 nm away

Docket · 1

The files NTSB released with the investigation on May 26, 2010, on NTSB’s docket system: statements, records, photos and specialists’ reports.

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.