DCA91MA019

NTSB accident investigation · British Aerospace 3101 · Beckley, WV · January 31, 1991

Accident · Serious injuriesMajor investigationFinal report
Date
January 30, 1991, 23:55 local (Jan 31, 1991, 04:55 UTC)
Place
Beckley, WV
Injuries
13 serious, 3 minor, 3 uninjured
Damage
Destroyed
Phase of flight
Enroute
Aircraft
N167PCBritish Aerospace 3101
Weather
Instrument (IMC) · Night/dark
Status
Completed · report July 10, 1992
Report
Approved by Office Director
NTSB office
Major Investigations Division
Safety recommendations
Yes
FAA report
19910131001279A
Case key
15946

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

Flight into known adverse weather conditions by the pilot, which resulted in ice accumulation on the aircraft and subsequent loss of aircraft control (tail plane stall) as the flaps were fully extended. Factors related to the accident were: the pilot's inadequate use of the preflight briefing service, inadequate training provided to the pilots by company/management personnel, inadequate surveillance by the FAA, and icing conditions.

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 encounter with weatherDescent - normal
Preflight briefing service - improper use ofPilot in commandFactor
Inadequate trainingCompany/operator managementFactor
Inadequate surveillance of operationFaa(organization)Factor
Anti-ice/deice system - inoperative
Operation with known deficiencies in equipment - performed
Weather condition - icing conditionsFactor
Flight into known adverse weather - continuedPilot in commandCause
Stabilizer - iceCause
Wing - iceFactor
Loss of control - in flightApproach - faf/outer marker to threshold (ifr)
Lowering of flaps - performed
Aircraft control - not possible
Remedial action - attemptedPilot in command
Hard landingLanding
Complete gear collapsedLanding

Analysis

Acft was dispatched with inop airframe deice sys, tho an opnl deice sys was rqrd for flt in known icg conds. Drg dscnt to lnd, acft enctrd lgt icg conds. Capt believed acft could 'handle it' & contd dscnt. As he bgn ILS final apch, he noted sgfnt incr of ice accumulation & used higher than nml apch spd. As full (50 deg) flaps were set, acft bgn buffet & pitched nose dwn. Capt corrected with full back pres on ctl column, but acft lndd hard, gear collapsed & acft slid abt 3600' to a stop. No preimpact mech anomaly was fnd, except for inop deice sys. Inv revealed plts had rcvd printout of wx fm co computer sys with sfc OBS & trml fcst, but no area fcst (fa). Plts & gnd psnl were not aware that fa was avail at co wx trml. Fa fcstd lgt & ocnl mod rime & mxd icg in clds & precip abv frzg lvl. Wx dtrtd, but plts did not req inflt wx info or pireps. Flt mnl noted tailplane ice may cause nose dwn trim chg with flap extn. There was evidence of tail plane stall, lack of co trng in cold wx opns, deficiencies in use of deicing sys, & lack of FAA surveillance.

Aircraft

Registration
N167PC
Reported as
British Aerospace 3101
Category
Airplane
Serial number
710
Airframe hours
8,841
Engine
Garrett TPE-331, 940 horsepower, turbo prop
Damage
Destroyed
Fire
On-Ground
Flight
Part 135
Operator
Ccair Inc., doing business as Usair Express
Registered owner
Meridian Trust Company Trustee
Airworthiness certificate
Standard, Normal
Last inspection
Continuous airworthiness · January 30, 1991 · 8 hours before
Departed
CLT · Charlotte, NC
Destination
BKW
Flight plan
IFR
Airport
BKW · Raleigh County Memorial, runway 19, 6,750 × 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
28
Certificates
Flight instructor, Airline transport, Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
5,000 total · 3,400 in this make and model · 3,500 as pilot in command · 231 in the last 90 days · 76 in the last 30 days · 6 in the last 24 hours

Weather

Conditions
Instrument (IMC) · Night/dark
Wind
330° at 13 knots
Visibility
1 statute miles
Lowest ceiling
200 ft overcast
Temperature
36 °F, dew point 37 °F
Altimeter
29.89 inHg
Observed at
BKW, 1 nm away

FAA reports on this event · 1

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