20260909011659I

Incident · No damage

FAA incident report · Cessna 172P · Modesto, CA · September 9, 2026

Date
September 9, 2026 · 18:50 local
Place
Modesto, CA
Airport
Modesto City-County-Harry Sham
Phase of flight
Climb
Operating rules
General operating rules (Part 91)
Damage
No damage
Aircraft
N1724P
Reported as
Cessna 172P
Reported engine
Lycoming O-320
People aboard
2
Fatal injuries
0
Other injuries
0
Pilot’s certificate
Commercial pilot
Pilot’s flight hours
700 total650 in this make and model100 in the last 90 days

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry 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.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

On September 9, 2026, at approximately 1850 local time, a Cessna 172P was conducting a part 91 introductory flight from Modesto, California, with two occupants on board: the pilot and a prospective flight student. While executing a slow cruise climb from 1,000 feet to 2,000 feet over the Modesto reservoir, the pilot operated the Lycoming O-320 D2J engine with the carburetor heat turned off to maximize power. High ambient humidity over the reservoir caused rapid carburetor icing, resulting in a sudden and complete loss of engine power. The pilot immediately applied carburetor heat, but at an altitude of approximately 1,700 feet and descending, there was insufficient time for the heat to clear the ice and restore power. The pilot declared a mayday emergency, stating the aircraft could not reach the airport, and successfully performed an off-field emergency landing on a grass field. The aircraft landed safely without sustaining damage, and neither occupant suffered injuries.

As the FAA filed it

ON SEPTEMBER 9, 2026, AT APPROXIMATELY 1850 LOCAL TIME, A CESSNA 172P WAS CONDUCTING A PART 91 INTRODUCTORY FLIGHT FROM MODESTO, CALIFORNIA, WITH TWO OCCUPANTS ON BOARD: THE PILOT AND A PROSPECTIVE FLIGHT STUDENT. WHILE EXECUTING A SLOW CRUISE CLIMB FROM 1,000 FEET TO 2,000 FEET OVER THE MODESTO RESERVOIR, THE PILOT OPERATED THE LYCOMING O-320 D2J ENGINE WITH THE CARBURETOR HEAT TURNED OFF TO MAXIMIZE POWER. HIGH AMBIENT HUMIDITY OVER THE RESERVOIR CAUSED RAPID CARBURETOR ICING, RESULTING IN A SUDDEN AND COMPLETE LOSS OF ENGINE POWER. THE PILOT IMMEDIATELY APPLIED CARBURETOR HEAT, BUT AT AN ALTITUDE OF APPROXIMATELY 1,700 FEET AND DESCENDING, THERE WAS INSUFFICIENT TIME FOR THE HEAT TO CLEAR THE ICE AND RESTORE POWER. THE PILOT DECLARED A MAYDAY EMERGENCY, STATING THE AIRCRAFT COULD NOT REACH THE AIRPORT, AND SUCCESSFULLY PERFORMED AN OFF-FIELD EMERGENCY LANDING ON A GRASS FIELD. THE AIRCRAFT LANDED SAFELY WITHOUT SUSTAINING DAMAGE, AND NEITHER OCCUPANT SUFFERED INJURIES.