# NTSB FTW89FA023: Beech A36, N6639R, Oklahoma City, OK, November 20, 1988 - Type: NTSB accident investigation - Classification: Accident · Fatal · Field investigation · Final report - Date: November 19, 1988, 20:07 local (Nov 20, 1988, 02:07 UTC) - Place: Oklahoma City, OK - Location: 35.3931° N, 97.6008° W: Placed by OpenAirDocs at OKC WILL ROGERS INTL (OKC), within about a mile (OpenAirDocs) - Nearby events: https://openairdocs.org/map.md?lat=35.3931&lon=-97.6008&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Highest injury: Fatal - Injuries: 2 fatal - Status: Completed, report August 24, 1989 - Report: Approved by Office Director - NTSB case key (mKey): 22754 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW89FA023 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/22754/pdf - Page: https://openairdocs.org/ntsb/FTW89FA023 ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Airframe/component/system failure/malfunction, climb - to cruise - flight into known adverse weather (contributing factor) - vacuum system - undetermined (contributing factor) - flight/nav instruments,attitude indicator - inoperative (contributing factor) - spatial disorientation, pilot in command (contributing factor) - initiated - In flight encounter with weather, climb - to cruise - weather condition - icing conditions (contributing factor) - In flight collision with terrain/water, landing - in-flight planning/decision - improper, pilot in command (cause) - light condition - dark night (contributing factor) - weather condition - low ceiling (contributing factor) - weather condition - fog (contributing factor) - ifr procedure - attempted - In flight collision with terrain/water, landing - proper glidepath - not maintained (contributing factor) - missed approach - not performed - precautionary landing - attempted - lowering of flaps - not attained, pilot in command (contributing factor) - wing - ice (cause) ## 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](https://openairdocs.org/deregistered/N6639R-1989-09-11), registration cancelled 1989-09-11, S/N E1534 (OpenAirDocs) - Reported make and model: BEECH A36 - Registry model: [Beech A36](https://openairdocs.org/model/beech-a36) (registry code 1151604) (OpenAirDocs) - Category: Airplane - Serial number: E-1534 - Airframe hours: 1964 - Engines: 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 ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 45; 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 (OpenAirDocs). - [Accident 19881119051329A](https://openairdocs.org/incident/19881119051329A), Nov 19, 1988: Beech A36, Oklahoma City, OK, Destroyed, 2 fatal. Reported vacuum lost and disoriented, also airframe icing. Too high on ILS. Missed approach, crashed on airport. ## Other investigations on N6639R (1) From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [NTSB MKC81FA013](https://openairdocs.org/ntsb/MKC81FA013), Jan 6, 1981: Beech A36 (N6639R), Kaizer, MO, substantial damage From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.