DCA15CA037

NTSB accident investigation · Boeing 737 · Baltimore, MD · December 13, 2014

Accident · No injuriesData collectionFinal report
Date
December 12, 2014, 20:30 local (Dec 13, 2014, 01:30 UTC)
Place
Baltimore, MD
Injuries
145 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N7710ABoeing 737
Defining event
Approach: Birdstrike
Weather
Visual (VMC) · Night
Status
Completed · report September 1, 2015
Report
Approved by Office Director
NTSB office
Major Investigations Division
Case key
90507

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

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Probable cause

an inadvertent encounter with birds during approach to land that resulted in substantial damage.

Findings · 1

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 · Contributed to outcomeBoeing 737-76N: 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

On December 12, 2014, about 2030 eastern standard time, Southwest Airlines flight 3118, a Boeing 737-76N, registration N7710A, encountered multiple bird strikes while on approach to Baltimore/Washington International Thurgood Marshall Airport, Baltimore, Maryland. None of the passengers or crew members were injured and the airplane sustained substantial damage. The flight was operating under the provisions of 14 CFR Part 121 as a domestic passenger flight and originated from San Antonio International Airport, San Antonio, Texas. The captain stated that while descending through about 2,500 feet on approach to land the airplane struck multiple birds. Inspection of the airplane after landing reveled substantial damage to the 178 forward pressure bulkhead and left wing fixed leading edge main rib.

Factual narrative

On December 12, 2014, about 2030 eastern standard time, Southwest Airlines flight 3118, a Boeing 737-76N, registration N7710A, encountered multiple bird strikes while on approach to Baltimore/Washington International Thurgood Marshall Airport, Baltimore, Maryland. None of the passengers or crew members were injured and the airplane sustained substantial damage. The flight was operating under the provisions of 14 CFR Part 121 as a domestic passenger flight and originated from San Antonio International Airport, San Antonio, Texas. The captain stated that while descending through about 2,500 feet on approach to land the airplane struck multiple birds. Inspection of the airplane after landing reveled substantial damage to the 178 forward pressure bulkhead and left wing fixed leading edge main rib.

Aircraft

Registration
N7710A
Reported as
Boeing 737 (76N)
Category
Airplane
Serial number
32656
Built
2005
Engines
CFM CFM56-7B, 22,000 lbs thrust, turbo fanCFM CFM56-7B, 22,000 lbs thrust, turbo fan
Damage
Substantial damage
Flight
Part 121
Operator
Southwest Airlines, Co.
Registered owner
AFS Investments 56 LLC
Airworthiness certificate
Standard, Transport
Departed
SAT · San Antonio, TX
Destination
BWI · Baltimore, MD
Flight plan
IFR
Airport
BWI · Baltimore Washington Internati

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
45
Injuries
None
Certificates
Commercial, Private, Airline transport
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Without waivers/limitations
Last flight review
June 1, 2014
Seat
Left
Restraint
5-point
Flight hours
13,974 total · 9,000 in this make and model · 6,800 as pilot in command · 150 in the last 90 days · 65 in the last 30 days · 7 in the last 24 hours
Role
Co-pilot
Age
41
Injuries
None
Certificates
Commercial, Airline transport, Private
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Without waivers/limitations
Last flight review
May 5, 2014
Seat
Right
Restraint
5-point
Flight hours
14,070 total · 1,166 in this make and model · 5,222 as pilot in command · 128 in the last 90 days · 41 in the last 30 days · 0 in the last 24 hours

Weather

Conditions
Visual (VMC) · Night
Wind
290° at 10 knots
Visibility
10 statute miles
Temperature
34 °F
Altimeter
30.10 inHg
Turbulence
Unknown
Observed at
BWI

Docket · 2

The files NTSB released with the investigation on September 3, 2015, on NTSB’s docket system: statements, records, photos and specialists’ reports. 640 KB in all.