DCA14CA031

NTSB accident investigation · De Havilland DHC8 - 102 · Philadelphia, PA · November 25, 2013

Accident · No injuriesData collectionFinal report
Date
November 24, 2013, 19:40 local (Nov 25, 2013, 00:40 UTC)
Place
Philadelphia, PA
Injuries
40 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N808EXDe Havilland DHC8 - 102
Defining event
Enroute-descent: Birdstrike
Weather
Visual (VMC) · Night
Status
Completed · report August 23, 2019
Report
Approved by Office Director
NTSB office
Major Investigations Division
FAA report
20131124024339A
Case key
88637

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

an inadvertent encounter with several birds during approach that resulted in substantial damage to the airplane.

Findings · 3

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 equipmentBoeing DHC-8-102: 1 caseAll aircraft: 358 casesProbable cause
Wing structure: spar (on wing)Aircraft › Aircraft structures · Damaged/degradedBoeing DHC-8-102: 1 caseAll aircraft: 43 cases

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

On November 24, 2013, at approximately 2040 EST, a De Havilland DHC-8-102, N808EX, operated by Piedmont Airlines as flight 4314, encountered a flock of a birds during the descent into Philadelphia International Airport (KPHL), Philadelphia, Pennsylvania. The airplane was located about 16 miles north of KPHL, and at about 4000 feet mean sea level (msl), when multiple birds impacted the fuselage and wing of the airplane . The flight crew notified air traffic control, and did not declare an emergency. None of the 40 passengers and crew onboard were injured and the airplane was substantially damaged. The flight was operating under 14 Code of Federal Regulations Part 121 as a regularly scheduled passenger flight between Greater Binghamton Airport (KBGM), Binghamton, New York, and KPHL. The captain was the pilot flying, and stated that flight conditions were night VMC with no moon. The flight crew stated they were at 4,000 feet msl, at about 190 knots airspeed, and on the downwind leg for runway 26 when the bird strike occurred. The flight crew heard multiple thuds and saw some of the birds through the windshield. After the impacts, the flight crew checked instruments, disconnected autopilot, checked for changes in flight characteristics and did not note any changes. The first officer notified ATC of the bird strike and did not declare an emergency. The flight landed uneventfully at KPHL. Post flight maintenance inspection revealed substantial damage to the left front wing spar, left wing skin, and vertical stabilizer deice boot.

Factual narrative

On November 24, 2013, at approximately 2040 EST, a De Havilland DHC-8-102, N808EX, operated by Piedmont Airlines as flight 4314, encountered a flock of a birds during the descent into Philadelphia International Airport (KPHL), Philadelphia, Pennsylvania. The airplane was located about 16 miles north of KPHL, and at about 4000 feet mean sea level (msl), when multiple birds impacted the fuselage and wing of the airplane . The flight crew notified air traffic control, and did not declare an emergency. None of the 40 passengers and crew onboard were injured and the airplane was substantially damaged. The flight was operating under 14 Code of Federal Regulations Part 121 as a regularly scheduled passenger flight between Greater Binghamton Airport (KBGM), Binghamton, New York, and KPHL. The captain was the pilot flying, and stated that flight conditions were night VMC with no moon. The flight crew stated they were at 4,000 feet msl, at about 190 knots airspeed, and on the downwind leg for runway 26 when the bird strike occurred. The flight crew heard multiple thuds and saw some of the birds through the windshield. After the impacts, the flight crew checked instruments, disconnected autopilot, checked for changes in flight characteristics and did not note any changes. The first officer notified ATC of the bird strike and did not declare an emergency. The flight landed uneventfully at KPHL. Post flight maintenance inspection revealed substantial damage to the left front wing spar, left wing skin, and vertical stabilizer deice boot.

Aircraft

Registration
N808EX
Reported as
De Havilland DHC8 - 102 (102)
Category
Airplane
Serial number
299
Airframe hours
53,120
Engines
Pratt and Whitney PW120A, 2,000 horsepower, turbo propPratt and Whitney PW120A, 2,000 horsepower, turbo prop
Damage
Substantial damage
Flight
Part 121
Operator
Piedmont Airlines, doing business as US Airways Express
Registered owner
USAirways
Airworthiness certificate
Standard, Transport
Last inspection
Continuous airworthiness · November 18, 2013
Departed
KBGM · Binghamton, NY
Destination
KPHL · Philadelphia, PA
Flight plan
IFR
Airport
KPHL · Philadelphia International Air, runway 26, 5,000 × 150 ft, asphalt
Equipment
Stall warning system, Data recorder

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
33
Injuries
None
Certificates
Commercial, Flight instructor, Airline transport
Airplane ratings
Single-engine land, Multi-engine land
Medical
Class 1, With waivers/limitations
Last flight review
November 15, 2013
Seat
Left
Restraint
5-point
Flight hours
8,200 total · 6,810 in this make and model · 2,200 as pilot in command · 116 in the last 90 days · 26 in the last 30 days · 3 in the last 24 hours
Role
Co-pilot
Age
28
Injuries
None
Certificates
Commercial, Airline transport
Airplane ratings
Single-engine land, Multi-engine land
Medical
Class 1, Without waivers/limitations
Last flight review
June 3, 2013
Seat
Right
Restraint
5-point
Flight hours
2,213 total · 428 in this make and model · 192 in the last 90 days · 82 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Night
Wind
290° at 7 knots
Temperature
27 °F, dew point -2 °F
Altimeter
30.44 inHg
Observed at
KPHL, 15 nm away

Docket · 3

The files NTSB released with the investigation on August 26, 2019, on NTSB’s docket system: statements, records, photos and specialists’ reports. 478 KB in all.

FAA reports on this event · 1

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