Cessna 411 N1133S

Summary

On 4 May 2003 at about 21:53 local time, a Cessna 411 registered N1133S was involved in an accident near Corona, California, United States. One person was on board and one died. The aircraft was destroyed. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

4 May 2003 at 21:53

Classification

Accident

Location

Corona, California, United States

Nearest airport

Corona Municipal (AJO)

Coordinates

33.8967, -117.5742

Aircraft

Cessna 411

Registration

N1133S

Category

Airplane

Engines

2

Operator

Not recorded

Operating rule

Part 91: General Aviation

Purpose of flight

Personal

Phase of flight

Not recorded

Route

Corona → Santa Monica

Aircraft damage

Destroyed

Weather

VMC

Light

Day

NTSB number

LAX03FA147

1 person died.

The failure of the pilot to properly configure the airplane for a one engine inoperative condition (including his failure to feather the propeller of the affected engine, retract the landing gear, and maintain minimum single engine speed). Factors related to the accident were fuel starvation of the left engine, due to an inadequate fuel supply in the left tanks, inoperative fuel transfer pumps, and the pilot's decision to takeoff with out fueling.

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

The pilot lost control of his twin engine airplane and collided with terrain while returning to the departure airport after reporting an engine problem. Shortly after takeoff, about 4,000 feet msl, the pilot reported to ATC that he had an engine problem and would return to the airport. The radar plot reveals a steady descent of the airplane from 4,000 feet msl to the accident site, approximately 2 miles from the designated airport. Ground witnesses reported that they saw the airplane flying very low, about 500 feet agl, seconds prior to the accident apparently heading toward the departure airport. The witnesses reported consistent observations of the airplane "wobbling," then going into a steep knife-edge left bank before it dove into the ground. Witnesses at the airport said that the pilot sought out help in getting his radios operating prior to takeoff, telling the witness, "its been four and a half months since I've been in an airplane, I can't even figure out how to put the radios back in." No fueling records were found for the airplane at the departure airport. The last documented fueling of the airplane was on October 31, 2002, with the addition of 56.2 gallons. Witnesses reported that the airplane did not take on any fuel immediately prior to the flight on May 4th. The flight was the first flight since the airplane received its annual inspection 2 months prior to the accident, and, it was the pilot's first flight after 4 months of inactivity. It is a common practice for maintenance personnel to pull the landing light circuit breakers during maintenance to prevent the fuel transfer pumps, which are wired through the landing light system, from operating continuously. The fuel transfer pumps move fuel from the forward part of the main fuel tank to the center baffle area where it is picked up and routed to the engine. It is conceivable that these circuit breakers were not reset by the pilot for this flight. Wreckage examination revealed a post accident fire on the right wing of the airplane and no fire on the left wing. Additionally, only a small amount of fuel was identified around the left wing tanks after the accident, and no hydraulic deformation was observed to the left main tank or the internal baffles. The landing gear bellcrank indicates that the landing gear was in the down position. The engine and propeller post impact signatures indicate that the left engine was operating at a low power setting (wind milling), while the right engine and propeller indicate a high power setting. Disassembly and inspection of the internal propeller hub components showed that the left propeller was not feathered. The left engine is the critical engine and loss of power in that engine would make directional control more difficult at slower speeds. The airplane owners manual states that "climb or continued level flight at a moderate altitude is improbable with the landing gear extended or the propeller wind milling." The single engine flight procedure delineated in the manual dictates a higher than normal altitude for a successful single engine landing approach.

Quoted verbatim from the NTSB record.