# NTSB MIA93LA187: Mooney M20J, N191ER, Daytona Beach, FL, September 2, 1993 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: September 2, 1993, 11:14 local (15:14 UTC) - Place: Daytona Beach, FL - Location: 29.1799° N, 81.0580° W: Placed by OpenAirDocs at DAYTONA BEACH INTL (DAB), within about a mile (OpenAirDocs) - Nearby events: https://openairdocs.org/map.md?lat=29.1799&lon=-81.0580&mi=10 - Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 3 uninjured - Status: Completed, report August 1, 1994 - Report: Approved by Office Director - NTSB case key (mKey): 37389 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA93LA187 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/37389/pdf - Page: https://openairdocs.org/ntsb/MIA93LA187 ## Probable cause CONTAMINATION/BLOCKAGE OF THE FUEL INJECTION CONTROL SYSTEM. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power(total) - nonmechanical, takeoff - initial climb - fuel injection control/system - contamination (cause) - fuel injection control/system - blocked(partial) (cause) - fluid,fuel - starvation - Forced landing, descent - emergency - Hard landing, descent - emergency ## Analysis AFTER TAKEOFF DURING THE INITIAL CLIMB WHEN THE FLIGHT WAS ABOUT 150 FEET ABOVE GROUND LEVEL, THE ENGINE FAILED. THE CFI TOOK THE CONTROLS AND WITH UNSUITABLE TERRAIN AHEAD AND INSUFFICIENT RUNWAY REMAINING, BANKED THE AIRPLANE TO THE LEFT AND LANDED HARD ON THE AIRPORT PROPERTY. THE AIRPLANE WAS RECOVERED AND BOTH WING FUEL TANK SUMP DRAINS AND THE GASCOLATOR WERE DRAINED TO CHECK FOR CONTAMINANTS; NONE WERE FOUND. A TEST PROPELLER WAS INSTALLED AND THE ENGINE WAS STARTED AND FOUND TO OPERATE NORMALLY. THE SERVO WAS DISASSAMBLED WHICH REVEALED CONTAMINANT RESEMBLING GASKET MATERIAL INSIDE THE MIXTURE HOUSING ASSEMBLY. ACCORDING TO OVERHAUL PERSONNEL, THE LOCATION OF THE CONTAMINANT COULD CAUSE A LOSS OF ENGINE POWER. THE SERVO HAD ACCUMULATED 498.5 HOURS SINCE OVERHAUL. ## Factual narrative On September 2, 1993, about 1114 eastern daylight time, a Mooney M20J, N191ER, registered to and operated by Embry-Riddle Aeronautical University, landed hard during a forced landing at the Daytona Beach Regional Airport, Daytona Beach, Florida, while on a 14 CFR Part 91 instructional flight. Visual meteorological conditions prevailed at the time and no flight plan was filed for the local flight. The airplane was substantially damaged and the certified flight instructor (CFI), pilot-rated student, and observer were not injured. The flight was originating at the time of the accident. After the student performed takeoff during the initial climb about 150 feet above ground level, the CFI reported that a loud popping noise was heard from the engine which then failed. The CFI took control of the airplane and with unsuitable terrain ahead and insufficient runway remaining, banked the airplane to the left. The airplane was landed hard on airport property. As a result, the left main landing gear was partially driven through the wing and the nose landing gear collapsed. The airplane was recovered and both wing fuel tank sumps and the gascolator were drained and checked for contaminants; none were found. A test propeller was installed and the engine was started and found to operate normally. The servo fuel injector assembly was removed for bench testing which revealed no evidence of failure or malfunction. The servo was then disassembled which revealed contaminant resembling gasket material inside the mixture control housing assembly. According to overhaul personnel, the location of the contaminant could cause a loss of power if the fuel jet were plugged. Review of maintenance records revealed that the servo was overhauled on May 21, 1992. It had accumulated according to the pilot/operator aircraft accident report form 498.5 hours since overhaul. ## Aircraft - Registration: N191ER (not matched to a registry record) - Reported make and model: MOONEY M20J - Category: Airplane - Serial number: 24-3252 - Airframe hours: 2486 - Engines: LYCOMING IO-360-A3B6D 200 horsepower reciprocating - Damage: Substantial damage - Flight: Instructional, Part 91 - Registered owner: Embry Riddle Aeronautical Univ - Airworthiness certificate: Standard, Normal - Last inspection: AAIP, August 31, 1993, 1 hours before - Airport: DAB, Daytona Beach Regional, runway 7L, 7,500 × 150 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 26; commercial, flight instructor, airline transport; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: right ## Weather - Conditions: Visual (VMC), Day - Wind: 120° at 8 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 88 °F, dew point 75 °F - Altimeter: 30.00 inHg - Observed at: DAB ## 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 19930902036239A](https://openairdocs.org/incident/19930902036239A), Sep 2, 1993: Mooney M20J, Daytona Beach, FL, Substantial damage. Lost power on climbout. CFI turned back and landed on airport in high sink rate. Fuel servo injector clogged. 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.