Rockwell NA-265-65 N2N

Summary

On 20 April 1982 at about 23:00 local time, a Rockwell NA-265-65 registered N2N, operated by Natural GAS Pipeline Co. of AM, was involved in an incident near St. Louis, Missouri, United States. 2 people were on board and nobody was injured. The aircraft was slightly damaged. No probable cause statement is available for this record.

Date

20 April 1982 at 23:00

Classification

Incident

Location

St. Louis, Missouri, United States

Nearest airport

Lambert-St. Louis Intl (STL)

Coordinates

Not recorded

Aircraft

Rockwell NA-265-65

Registration

N2N

Category

Airplane

Engines

2

Operator

Natural GAS Pipeline Co. of AM

Operating rule

Part 91F: Special Flt Ops.

Purpose of flight

Executive/Corporate

Phase of flight

Not recorded

Route

Grand Island → Nashville

Aircraft damage

Minor

Weather

VMC

Light

Day

NTSB number

MKC82IA059

Nobody was injured.

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

WHILE ENROUTE FROM GRAND ISLAND, NE TO NASHVILLE, TN, THE PILOT NOTICED THAT THE AIRCRAFT WOULD NOT TRIM NOSE DOWN, BUT THAT IT WOULD TRIM NOSE UP NORMALLY. THE PILOT REDUCED SPEED AND ALTITUDE AND DIVERTED TO ST. LOUIS, MO IN ORDER TO HAVE THE PROBLEM REPAIRED. ON SHORT FINAL TO RUNWAY 30R, THE AIRCRAFT PITCHED DOWN VIOLENTLY. THE PILOT STATED THAT BOTH PILOTS WERE REQUIRED ON THE ELEVATOR TO EFFECT RECOVERY FROM THE PITCHOVER. ONCE RECOVERED, THE APPROACH WAS CONTINUED TO A NORMAL LANDING. INVESTIGATION REVEALED THAT ONE OF 4 ELECTRICAL TRAVEL LIMIT SWITCHES HAD A LOOSE CONNECTION WHICH WOULD ALLOW THE ACTUATOR TO DRIVE TO THE MECHANICAL STOP. AFTER NUMEROUS CYCLES, THE ACTUATOR SLEEVE/DUST COVER WOULD CRACK ALLOWING THE ROD ENDS TO DISCENGAGE FROM THE ACTUATOR. IT WAS ALSO DETERMINED THAT WITH THE MECHANICAL FLEXIBLE SHAFT INTERCONNECT BETWEEN THE TWO ACTUATORS A FAILURE OF ONE ELECTRICAL LIMIT SWITCH WOULD PERMIT BOTH ACTUATORS TO BE DRIVEN TO THEIR MECHANICAL LIMITS.

Quoted verbatim from the NTSB record.