Aero Commander 520 N4164B

Summary

On 27 July 1987 at about 16:01 local time, a Aero Commander 520 registered N4164B was involved in an accident near Carrollton, Texas, United States. 2 people were on board and 2 had minor injuries. The aircraft was destroyed. No probable cause statement is available for this record.

Date

27 July 1987 at 16:01

Classification

Accident

Location

Carrollton, Texas, United States

Nearest airport

Addison (AD5)

Coordinates

32.9806, -96.8909

Aircraft

Aero Commander 520

Registration

N4164B

Category

Airplane

Engines

2

Operator

Not recorded

Operating rule

Part 91: General Aviation

Purpose of flight

Personal

Phase of flight

Not recorded

Route

Addison → Dallas

Aircraft damage

Destroyed

Weather

VMC

Light

Day

NTSB number

FTW87FA177

2 people had minor injuries.

The NTSB has not published a probable cause for this record. No probable cause statement is present in the source data.

Nothing about the cause is stated here that is not in the source record.

Read the full NTSB narrative

ACFT WAS DESTROYED WHEN IT STRUCK PWR LINES AND THE GRND DURING A SINGLE ENG GO-AROUND. FOLLOWING A LEFT ENG SHUT DOWN DUE TO SEVERE VIBRATIONS, THE PLT OVERFLEW ONE ARPT TO RETURN TO HIS HOME BASE. EN ROUTE, HE ELECTED NOT TO GO TO FULL PWR DUE TO A 3 MIN LIMITATION HE DID NOT WANT TO EXCEED. THE PLT OVERSHOT THE RWY WHILE MANUALLY EXTENDING THE NOSE GEAR AND ELECTED TO ATTEMPT A RT 270 DEG TURN TO RETURN TO FINAL WHILE AT 100-150' AGL. NLG DID NOT EXTEND DUE TO HYD PUMP BEING ON LEFT ENG AND NO PRESSURE. DURING THE TURN, THE PLT LOST CONTROL AND THE ACFT STRUCK THE WIRES. INVESTIGATION REVEALED THAT ONE OF THE BLADE PITCH CHANGE LINKS ON THE LEFT PROP HAD DISCONNECTED, ALLOWING ONE BLADE TO FREE FLOAT. THE LINK PIN ASSEMBLY HAD BACKED OUT AS A RESULT OF THE SAFETY SCREW BACKING OUT DUE TO DAMAGED AND STRIPPED THREADS AND AN IMPROPER LENGTH SCREW BEING INSTALLED. PROPS HAD 1/4' SAFETY SCREWS INSTALLED INSTEAD OF 3/8'.

Quoted verbatim from the NTSB record.