# Accident 19990625007609A: Beech C90, Munson, FL, June 25, 1999 - Type: FAA accident report (Accident/Incident Data System), as reported - Date: June 25, 1999, 10:14 local time - Place: Munson, FL - Damage: Destroyed - Phase of flight: Descent - Operating rules: Air taxi and commuter (Part 135) - Operator: ZTIA - Location: 30.6307° N, 87.0406° W: From the FAA, an estimate near the named town, within about 3 miles - Nearby events: https://openairdocs.org/map.md?lat=30.6307&lon=-87.0406&mi=10 - Aircraft: N3019W, a cancelled registration (https://openairdocs.org/deregistered/N3019W-2013-04-30) (OpenAirDocs) - Registry model: Beech C90 (registry code 1152913, https://openairdocs.org/model/beech-c90) (OpenAirDocs) - Registry engine: U/A Canada PT6A series (registry code 61508, https://openairdocs.org/engine/u-a-canada-pt6a-series) (OpenAirDocs) - Reported make and model: BEECH C90 - Reported engine: PWA PT6A20A - People aboard: 2 - Fatal injuries: 2 - Pilot flight hours: 7,000 total - NTSB investigation: [NTSB MIA99FA188](https://openairdocs.org/ntsb/MIA99FA188) (OpenAirDocs) - FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/) - Page: https://openairdocs.org/incident/19990625007609A ## Narrative As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^. PILOT REPORTED THAT THE ACFT WAS OUT OF CONTROL AND GOING DOWN, RADAR AND RADIO CONTACT WAS SUBSEQUENTLY LOST, THE ACFT CRASHED AND WAS DESTROYED BY FIRE, THE 2 POB SUFFERED FATAL INJURIES, OTHER CIRCUMSTANCES ARE UNKNOWN. (-23)ON 6-25-99, WHILE OPERATING AS A 14 CFR 135 CHARTER FLIGHT FROM ZEPHERHILLS, FL, TO MOBILE, AL, KING AIR N3019W CRAHSED NEAR MUNSON, FL, AT APPROXIMATELY 1016 HRS LOCAL. THE FLIGHT HAD 1 PILOT AND 1 PASSENGER ABOARD. THERE WAS SEVERE WEATHER AND THUNDERSTORMS ON THE ROUTE OF FLIGHT, WITH STROMS OF 50-55 DB OF RADAR REFLECTIVITY. THE PILOT APPARENTLY TRIED TO DEVIATE AROUND THE THUNDERSTORMS BUT INADVERTENTLY ENTERED ONE. THE PILOT LOST CONTROL OF THE THE AIRCRAFT AND DURING THE DESCENT EXCEEDED THE FLIGHT ENVELOPE OF THE C-90. DURING THE HIGH SPEED DESCENT THE HORIZONTAL FLIGHT CONTROL SURFACES AND WING OUTBOARD SECTIONS (OUTBOARD OF THE ENGINE NACELLES) FAILED DUE TO STRUCTURAL OVERLOAD. THE C-90 CRAHSED INVERTED, WITH POSTCRASH FIRE AND NO SURVIVORS. (.4)THE PILOT RECEIVED A PREFLIGHT WEATHER BRIEFING AND WAS ADVISED OF THUNDERSTORMS WITH TOPS TO 45,000 FEET ALONG A PORTION OF THE ROUTE OF FLIGHT. EN ROUTE, THE PILOT WAS ADVISED OF SIGNIFICANT AREAS OF HEAVY PRECIPITATION TO WHICH THE PILOT RESPONDED, 'UH ROGER ONE NINE WHISKEY IT LOOKS LIKE ON OUR RADAR HERE THAT UH WE GO STRAIGHT AHEAD WE'LL BE ALL RIGHT THERE.' THE FLIGHT WAS CLEARED TO DESCEND TO 11,000 FEET AND THE PILOT REQUESTED DEVIATION TO THE RIGHT FOR WEATHER AVOIDANCE. THE PILOT MADE SEVERAL ROUTINE RADIO COMMUNICATIONS WHILE DESCENDING AT A CALCULATED AVERAGE RATE OF DESCENT OF APPROXIMATELY 2,571 FPM BEFORE ENCOUNTERING ADVERSE WEATHER. DURING THIS TIME WHILE DESCENDING, THE CALCULATED CALIBRATED AIRSPEED INCREASED FROM APPROXIMATELY 190 KNOTS TO APPROXIMATELY 265 KNOTS (THE DESIGN DIVE SPEED VD). THE FLIGHT ENCOUNTERED A LEVEL 5 WEATHER ECHO THEN BEGAN A HIGH RATE OF DESCENT. BOTH HORIZONTAL STABILIZERS WITH ELEVATORS AND BOTH OUTER PORTIONS OF BOTH WINGS FAILED IN A DOWN DIRECTION. EXAMINATION OF THE FLIGHT CONTROL CABLES, FRACTURE SURFACES OF THE WINGS AND HORIZONTAL STABILIZERS, ENGINES, AND PROPELLERS REVEALED NO EVIDENCE OF PREIMPACT FAILURE OR MALFUNCTION. THE PILOT DID NOT REQUEST PILOT REPORTS. THE DESIGN MANEUVERING SPEED OF THE AIRPLANE IS 169 KNOTS INDICATED; THE POH INDICATES TO SLOW TO THIS SPEED FOR TURBULENCE PENETRATION. ## The NTSB's investigation of this event (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 MIA99FA188](https://openairdocs.org/ntsb/MIA99FA188), Jun 25, 1999: Beech C90 (N3019W), Munson, FL, destroyed, 2 fatal. Probable cause: The poor in-flight weather evaluation by the pilot-in-command and his operation of the airplane at an indicated airspeed greater than the design maneuvering speed (Va) in a thunderstorm contrary to… From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record. --- 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.