FTW89FA023

NTSB accident investigation · Beech A36 · Oklahoma City, OK · November 20, 1988

Accident · FatalField investigationFinal report
Date
November 19, 1988, 20:07 local (Nov 20, 1988, 02:07 UTC)
Place
Oklahoma City, OK
Injuries
2 fatal
Damage
Destroyed
Phase of flight
Enroute
Aircraft
N6639RBeech A36
Weather
Instrument (IMC) · Night/dark
Status
Completed · report August 24, 1989
Report
Approved by Office Director
FAA report
19881119051329A
Case key
22754

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

On this page

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.

Airframe/component/system failure/malfunctionClimb - to cruise
Flight into known adverse weatherFactor
Vacuum system - undeterminedFactor
Flight/nav instruments,attitude indicator - inoperativeFactor
Spatial disorientationPilot in commandFactor
Initiated
In flight encounter with weatherClimb - to cruise
Weather condition - icing conditionsFactor
In flight collision with terrain/waterLanding
In-flight planning/decision - improperPilot in commandCause
Light condition - dark nightFactor
Weather condition - low ceilingFactor
Weather condition - fogFactor
Ifr procedure - attempted
In flight collision with terrain/waterLanding
Proper glidepath - not maintainedFactor
Missed approach - not performed
Precautionary landing - attempted
Lowering of flaps - not attainedPilot in commandFactor
Wing - iceCause

Analysis

The plt was briefed on flt prctns for IFR conds, tstms & ocnl mod rime icing. Drg the climb, he told ATC he was having trouble with his vacuum & was disoriented. ATC clrd him for altitudes he could use & bgn providing no-gyro vectors. A wxcheck revealed there were no arpts with VFR conds w/i 100 mi. The plt elected to divert for an ILS rwy 17R apch to the will rogers world arpt. As the flt contd, the plt rprtd he was starting to "pick up a little ice" & was having trouble climbing. With ATC assist, he made an ILS apch, but was too hi to make a normal lndg. He was told to climb & turn rgt for a missed apch, but the acft turned left to an easterly hdg & crash landed near the center of the arpt with the gear dwn & flaps retracted. The gear collapsed on impact. The acft slid 330' & stopped on rwy 17L. It then burned, destroyingvacuum hoses, regulator & most of the attitude indcr, but the vacuum pump was still operable. Although the acft burned, pieces of thick ice were fnd on the left wing. The acft was not equipped for flt into known icing conds.

Aircraft

Registration
N6639R
Reported as
Beech A36
Category
Airplane
Serial number
E-1534
Airframe hours
1,964
Engine
Continental IO-520-BB, 285 horsepower, reciprocating
Damage
Destroyed
Fire
On-Ground
Flight
Personal · Part 91
Operator
Miller, David D.
Registered owner
Breedlove, William D
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 5, 1988 · 104 hours before
Departed
OUN · Norman, OK
Destination
3DW · Springfield, MO
Flight plan
IFR
Airport
OKC · Will Rogers World, runway 17R, 9,800 × 150 ft, concrete

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
45
Certificate
Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Toxicology
Performed
Flight hours
510 total · 185 in this make and model

Weather

Conditions
Instrument (IMC) · Night/dark
Wind
320° at 15 knots
Visibility
1 statute miles
Lowest ceiling
700 ft overcast
Temperature
95 °F, dew point 91 °F
Altimeter
29.00 inHg
Observed at
OKC

FAA reports on this event · 1

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

Other investigations on N6639R · 1

Matched to the same aircraft by N-number and date.