FTW98IA208

NTSB incident investigation · Boeing 727-25C · Colorado Sprngs, CO · May 8, 1998

Incident · No injuriesIncident investigationFinal report
Date
May 7, 1998, 21:30 local (May 8, 1998, 03:30 UTC)
Place
Colorado Sprngs, CO
Injuries
3 uninjured
Damage
Minor damage
Phase of flight
Enroute
Aircraft
N116FEBoeing 727-25C
Weather
Visual (VMC) · Night/dark
Status
Completed · report May 19, 1999
Report
Approved by Office Director
FAA report
19980507018459I
Case key
20440

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

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Probable cause

An inadvertent inflight collision with a flock of large birds.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

In flight collision with objectClimb
Object - bird(s)Cause
Loss of engine powerClimb
Compressor assembly,blade - foreign object damage
Engine shutdown - intentionalPilot in command

Analysis

Federal Express flight 1287 departed Colorado Springs, en route to Memphis, Tennessee. When the airplane was north of the airport and passing 8,500 feet msl, it struck a flock of large white birds, causing an uncontained no. 3 engine failure. There was also a loss of essential electrical power. The captain declared an emergency, returned to the Colorado Springs Airport, and made an uneventful landing. In addition to minor damage to the right side of the fuselage, visual inspection of the engine disclosed bird remains in and around the no. 3 engine. The outboard 4 inches of the first stage compressor blade separated, damaging the first and second stage compressor blades, stator blades, and inlet guide vanes. Shrapnel was ejected through the engine case at the 12 o'clock position, severing the no. 3 electrical bus wire bundle and puncturing the engine inlet anti-ice bleed air duct. The nose and upper engine cowling and thrust reverser were also damaged. The constant speed drive oil cooler was partially separated due to engine vibrations.

Factual narrative

On May 7, 1998, approximately 2130 mountain daylight time, a Boeing 727-25C, N116FE, operated by Federal Express Corporation of Memphis, Tennessee, sustained minor damage when it struck a flock of birds during climbout from Colorado Springs, Colorado. There were no injuries to the airline transport rated captain, first officer, and second officer. Visual meteorological conditions prevailed, and an IFR flight plan was filed for the scheduled domestic cargo flight being operated under Title 14 CFR Part 121. The flight originated approximately 2120.

According to the incident report submitted by Federal Express, flight 1287 took off from Colorado Springs, and was en route to Memphis, Tennessee. When the airplane was north of the airport and passing 8,500 feet msl, it struck "a flock of large white birds." The crew felt "moderate to severe vibrations due to the ingestion of one or more birds into the no. 3 engine." This caused an uncontained engine failure. There was also a loss of essential electrical power. After restoring electrical power using the no. 1 generator, the captain declared an emergency, returned to the Colorado Springs Airport, and made an uneventful landing.

The right hand side of the airplane sustained all the damage. The radome was damaged, and there was a tear in the skin behind the radome. A doubler at F.S. 196 was damaged, and there were multiple skin dents below the pitot-static tube.

Visual inspection of the engine disclosed bird remains in and around the no. 3 engine. The outboard 4 inches of the first stage compressor blade separated, damaging the first and second stage compressor blades, stator blades, and inlet guide vanes. Shrapnel was ejected through the engine case at the 12 o'clock position, severing the no. 3 electrical bus wire bundle and puncturing the engine inlet anti-ice bleed air duct. The nose and upper engine cowling and thrust reverser were also damaged. The constant speed drive oil cooler was partially separated due to engine vibrations.

According to a report submitted by Lufthansa Airmotive Ireland, the facility that disassembled and inspected the no. 3 engine, there was "severe front and rear compressor damage." One of the C1 blades fractured and penetrated the front fan case at the 12 o'clock position. There was also "heavy metal splatter" on all stages of the turbine discs and nozzle guide vanes.

Ingested bird remains were submitted to the Smithsonian Institute and were identified as coming from a Canadian goose. The report stated that the average weight of a Canadian goose is 8 pounds.

Aircraft

Registration
N116FE
Reported as
Boeing 727-25C
Category
Airplane
Serial number
19298
Airframe hours
63,119
Engine
P&W JT8D-7BQN, 14,000 lbs thrust, turbo jet
Damage
Minor damage
Flight
Part 121
Registered owner
Federal Express Corporation
Airworthiness certificate
Standard, Transport
Last inspection
Continuous airworthiness · March 5, 1998
Departed
COS
Destination
MEM · Memphis, TN
Flight plan
IFR

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

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
38
Certificates
Commercial, Airline transport, Flight engineer
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
3,051 total · 2,386 in this make and model · 638 as pilot in command · 34 in the last 90 days · 9 in the last 30 days

Weather

Conditions
Visual (VMC) · Night/dark
Wind
360° at 9 knots
Visibility
10 statute miles
Lowest ceiling
10,000 ft broken
Temperature
45 °F, dew point 39 °F
Altimeter
30.00 inHg
Observed at
COS

FAA reports on this event · 1

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