# NTSB FTW99LA070: Cessna 180J, N52170, Granbury, TX, January 23, 1999 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: January 23, 1999, 10:30 local (16:30 UTC) - Place: Granbury, TX - Coordinates: 32.459224, -97.709968 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=32.4592&lon=-97.7100&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report March 31, 2000 - Report: Approved by Office Director - NTSB case key (mKey): 45677 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW99LA070 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/45677/pdf - Page: https://openairdocs.org/ntsb/FTW99LA070 ## Probable cause The loss of engine power due to an undetermined reason. A factor was the power lines crossing the final approach path. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power, cruise - reason for occurrence undetermined (cause) - Forced landing, descent - emergency - Hard landing, emergency descent/landing - airport facilities,runway/landing area condition - high obstruction(s) (contributing factor) ## Analysis At departure the right fuel tank was empty, the left fuel tank contained 17 gallons, and the fuel selector was positioned to the 'BOTH' position for takeoff. After takeoff, the pilot selected the left fuel tank. Within 2 to 3 minutes after takeoff, the engine began to 'run rough and sputter.' Emergency checklist procedures did not restore engine power. Power lines crossed the approach path for the runway selected for the forced landing. The airspeed decreased as the airplane cleared the power lines and the airplane landed 'hard' on the runway. Flight control continuity was confirmed. There was continuity of fuel flow throughout the fuel system. No physical evidence of fuel leakage was found. Engine continuity was confirmed and no discrepancies were found that would prevent engine operation. The carburetor was flow tested and disassembled. No fuel flow test variations or discrepancies were noted that would prevent operation of the carburetor. ## Factual narrative On January 23, 1999, at 1030 central standard time, a Cessna 180J airplane, N52170, sustained substantial damage during a forced landing following a loss of engine power near Granbury, Texas. The airplane was owned and operated by a private individual under 14 Code of Federal Regulations (CFR) Part 91. The private pilot and the pilot rated passenger were not injured. Visual meteorological conditions prevailed for the local personal flight and a flight plan was not filed. The airplane departed a private airstrip a few minutes before the accident. During interviews, conducted by the investigator-in-charge (IIC), and on the enclosed statements, the pilot and the passenger reported the following information. During the preflight, the fuel tanks were dipped utilizing a fuel stick made by the passenger. The right fuel tank was empty and the left fuel tank contained 17 gallons. The fuel selector was positioned to the "BOTH" position for takeoff and after 7 to 10 minutes of ground run and taxi time, the flight departed on runway 33 for the Granbury Municipal Airport for refueling. After takeoff, the pilot selected the left fuel tank. Approximately 2 to 3 minutes after takeoff, the engine began to "run rough and sputter." The pilot rated passenger switched the fuel selector to the "BOTH" position and pulled the carburetor heat to the "ON" position. The engine power was not restored. The pilot selected the Nassau Bay Airport for an emergency landing. The airspeed decreased as the airplane cleared power lines which span the approach end of runway 34 and the airplane landed "hard" on the runway. The left main gear and strut sheared from the airplane and the airplane came to rest with the left wing and propeller striking the runway. Following the accident, the pilot and acquaintances drained approximately 10 gallons of fuel from the left tank and removed the airplane from the runway. Subsequently, the airplane was transported to a hangar and stored for further examination. The FAA inspector and the airframe manufacturer representative examined the airplane at the hangar. The airframe representative found that the left main gear box sustained structural damage and that approximately 8 inches of the outboard portion of the left elevator was found separated from the airplane. Flight control continuity was confirmed. On February 4, 1999, the airplane was examined by the engine manufacturer representative under the surveillance of the IIC. Structural damage was confirmed at the left main landing gear attachment box and fuselage. Continuity of fuel flow through the left and right tank fuel lines, with the fuel selector in all possible positions (left, right, both), was confirmed to the carburetor. Both fuel tank caps were vented, unobstructed, and sealed. Fuel vents, fuel drains, and fuel lines were unobstructed. The fuel filter screen and the carburetor fuel screen were free of debris. The air intake and filter were free of debris. The fuel primer was in and locked. Engine continuity was confirmed and a differential compression check was performed. The oil screen was free of debris. Both magnetos sparked at all terminals when hand rotated. The magneto switch was operational. The propeller blades were bent aft at the outboard 6 to 8 inch area. The propeller tips exhibited chordwise scoring. On March 29, 1999, the carburetor was examined, under the surveillance of a NTSB investigator, at Precision Airmotive Corporation, Everett, Washington. The carburetor (original part number 10-5192) was flow tested using the 10-5192 master carburetor. No fuel flow variations were noted that would prevent operation of the carburetor. The carburetor was disassembled and inspected with no discrepancies noted that would prevent the carburetor from functioning. A review of the maintenance records by the IIC revealed that the 1975 aircraft was registered to the current owner on November 19, 1991. In November 1996, the Continental engine TSIO-520-M was modified in accordance with P. Ponk STC #SE 4988NM Part C and assigned Ponk STC S/N 2104. The Marvel Schebler MA-4-5 carburetor was modified in accordance with P. Ponk Aviation STC #SE4988NM Part D, and assigned S/N J068902 for use with the modified engine (S/N 2104). The McCauley Propeller D3A34C401/90DFA-2 was installed per aircraft STC SA00468WI. After the modifications, the engine was recorded as model O-470-50. The last annual inspection was performed on December 9, 1998. Time since that annual inspection was 9.8 hours. At the time of the accident, the total time on the aircraft was 6,304.6 hours, and 245.9 hours on the modified engine. ## Aircraft - Registration: [N52170](https://openairdocs.org/aircraft/N52170), registered now, S/N 18052534, built 1975 (OpenAirDocs) - Reported make and model: Cessna 180J - Registry model: [Cessna 180J](https://openairdocs.org/model/cessna-180j) (registry code 2072622) (OpenAirDocs) - Registry engine: [Continental O-470 series](https://openairdocs.org/engine/continental-o-470-series) (registry code 17026, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 18052534 - Airframe hours: 6305 - Engines: Continental O-470-50 235 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: James R. Robinson - Airworthiness certificate: Standard, Normal - Last inspection: Annual, December 9, 1998, 10 hours before - Departed: NONE, TX - Flight plan: Unknown - Airport: NONE, Nassau Bay, runway 34, 2,800 × 300 ft, grass/turf ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 53; private; airplane ratings: single-engine land, single-engine sea; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 400 total, 160 in this make and model, 350 as pilot in command ## Weather - Conditions: Visual (VMC), Day - Wind: 350° at 15 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 50 °F ## 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 19990123045429A](https://openairdocs.org/incident/19990123045429A), Jan 23, 1999: Cessna 180J, Granbury, TX, No damage. (-23)Pilot claims approxmately 3 minutes after take off from her private strip enroute to Granbury TX airport to take on fuel the engine started to, "miss" as… 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.