BFO93IA026

NTSB incident investigation · Boeing 737-130 · Portland, ME · February 13, 1993

Incident · No injuriesIncident investigationFinal report
Date
February 13, 1993, 15:11 local (20:11 UTC)
Place
Portland, ME
Injuries
99 uninjured
Damage
No damage
Phase of flight
Landing
Aircraft
N403PEBoeing 737-130
Weather
Instrument (IMC) · Day
Status
Completed · report November 3, 1993
Report
Approved by Office Director
Case key
11876

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

The pilot in command's excessive airspeed during approach, and his failure to follow the proper braking procedures during landing as per company training. Factors contributing to the accident include a tailwind and a wet, downhill runway.

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.

OverrunLanding
Speed brakes - improper use ofPilot in commandCause
Reversers - improper use ofPilot in commandCause
Procedures/directives - improper use ofPilot in commandCause
Airport facilities,runway/landing area condition - downhillFactor
Airspeed(vref) - not maintainedPilot in commandCause
Weather condition - tailwindFactor
Airport facilities,runway/landing area condition - wetFactor

Analysis

According to Continental airlines, the captain executed an ILS approach to runway 11 and used an airspeed (v ref) of 136 knots. The flight data recorder revealed that the airspeed fluctuated from 150 knots to 159 knots during the final phase of the approach. The airplane touched down about 2500 feet down the wet, downhill runway. The captain stated that he deployed the thrust reversers, and then the speed brakes. The procedure taught to Continental pilots was to deploy the speed brakes first, and then the thrust reversers in order to produce maximum braking effectiveness. The airplane overran the runway.

Aircraft

Registration
N403PE
Reported as
Boeing 737-130
Category
Airplane
Serial number
19020
Engine
P&W JT8D-7, 14,500 lbs thrust, turbo fan
Damage
No damage
Flight
Part 121
Operator
Continental Airlines, Inc.
Registered owner
Continental Airlines, Inc.
Airworthiness certificate
Standard, Transport
Last inspection
Unknown · January 2, 2000
Departed
EWR · Newark, NJ
Destination
PWM
Flight plan
IFR
Airport
PWM · Portland Int'L Jetport, runway 11, 6,800 × 150 ft, asphalt

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
58
Certificate
Airline transport
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Seat
Left
Toxicology
Performed
Flight hours
22,000 total · 9,999 in this make and model · 150 in the last 90 days · 1 in the last 24 hours

Weather

Conditions
Instrument (IMC) · Day
Wind
260° at 8 knots
Visibility
1 statute miles
Lowest ceiling
300 ft overcast
Temperature
34 °F, dew point 34 °F
Altimeter
29.00 inHg
Observed at
PWM, 1 nm away