Mooney M20K N777WP

Summary

On 13 March 2020 at about 21:47 local time, a Mooney M20K registered N777WP was involved in an accident near Sylmar, California, United States. 2 people were on board and 2 died. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

13 March 2020 at 21:47

Classification

Accident

Location

Sylmar, California, United States

Nearest airport

Van Nuys (VNY)

Coordinates

34.3306, -118.5264

Aircraft

Mooney M20K

Registration

N777WP

Category

Airplane

Year built

1983

Engines

1

Operator

Not recorded

Operating rule

Part 91: General Aviation

Purpose of flight

Personal

Phase of flight

Not recorded

Route

North Bend → Van Nuys

Aircraft damage

Substantial

Weather

IMC

Light

Day

NTSB number

WPR20FA108

2 people died.

The pilot’s spatial disorientation during an instrument approach in instrument meteorological conditions, which resulted in loss of control of the airplane.

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

Read the full NTSB narrative

The pilot was at the completion of a cross-country flight during daytime instrument meteorological conditions. A review of air traffic control (ATC) audio recordings and automatic dependent surveillance-broadcast (ADS-B) data showed that the pilot advised ATC he was inbound on the instrument landing system instrument approach, the airplane was established on the localizer to runway 16R, and the air traffic controller cleared the pilot to land. About 1 minute later, as the airplane was near the final approach fix, it began a series of climbing and descending turns to the south and west of the approach course over high terrain. The air traffic controller queried the pilot and provided multiple instructions to both climb and turn to the south. The pilot initially flew to the south as directed but soon began maneuvering to the west and north. The pilot’s final response to ATC instructions occurred when the airplane was at an altitude of about 2,744 ft mean sea level (msl). No further radio communication from the pilot acknowledging the controller’s instructions was received. The ADS-B data showed that the airplane turned left slightly 23 seconds later, followed by a series of mostly right turns. Throughout the final turn, the airplane’s altitude fluctuated over 400 ft. The last recorded radar target was at an altitude of 2,638 ft msl, within the vicinity of the accident site. The wreckage was located adjacent to a downed powerline within mountainous terrain at 2,315 ft msl. All major structural components of the airplane were located within the debris path. Postaccident examination of the wreckage revealed no evidence of any preexisting mechanical malfunction that would have precluded normal operation with the airframe or engine. The pilot’s communications with ATC as the flight deviated from the approach course included delayed response, incomplete readback of instructions, and transmissions consistent with increasing stress. These communications occurred while the airplane’s ground track was off course, both laterally and vertically. The airplane maneuvers were inconsistent with the charted approach and ATC instructions. The airplane’s altitude and heading deviations on the approach indicate the pilot was not reliably and positively controlling the airplane by reference to instruments. Pilot communications early in this period were nominal. However, as off-course maneuvering continued and became more erratic, the pilot’s communications became distressed, suggesting he recognized the difficulty he was having controlling the airplane. As the restricted visibility conditions and maneuvering were conducive to the development of spatial disorientation, it is likely that the pilot experienced spatial disorientation before losing control of the airplane.

Quoted verbatim from the NTSB record.