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Aviation safety reports, made easier to study

NTSB Reports is an independent research and search tool for public aviation accident and incident records. It brings NTSB aviation reports, structured fields, docket files, extracted figures, photos, videos, and update history into one searchable interface.

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July 22, 1990 · Boeing 737-222 · N210US

Kinston, NC

Overview

Report Status
Probable Cause
Event Type
Accident
Date
July 22, 1990
Injury Outcomes
2 injuries (2 minor injuries), 25 uninjured
Location
Kinston, NC
Aircraft
Boeing 737-222
Tail Number
N210US
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
ATL90FA146

AS ENGINE POWER WAS INCREASED FOR TAKEOFF, THE NO. 1 ENGINE ACCELERATED BEYOND TARGET EPR. ENGINE SHUT DOWN HAD TO BE DONE WITH THE FUEL SHUT OFF LEVER. THE ASYMMETRIC THRUST WAS CONTROLLED WITH NOSE WHEEL STEERING. BEFORE THE AIRPLANE COULD BE STOPPED THE NOSE WHEELS SEPARATED FROM THE LANDING GEAR. THE INVESTIGATION REVEALED THAT THE FUEL PUMP OUTPUT SPLINE TO THE FUEL CONTROL HAD STRIPPED. IT OCCURRED AT SUCH A TIME THAT THE FUEL CONTROL SENSED AN UNDERSPEED & INCREASED FUEL FLOW. MISALIGNMENT OF THE SPLINE SHAFT RESULTED FROM IMPROPER MACHINING DURING PUMP MODIFICATION. THE NOSE GEAR INNER CYLINDER FAILED IN FATIGUE IN AN AREA OF EXCESSIVE GRINDING DURING OVERHAUL.

NTSB Probable Cause

FAILURE OF THE FUEL PUMP CONTROL SHAFT BECAUSE OF IMPROPER MACHINING BY THE REPAIR FACILITY DURING MAINTENANCE MODIFICATION OF THE PUMP AND IMPROPER PROCEDURES DURING OVERHAUL OF THE NOSE LANDING GEAR.

Full Narrative

AS ENGINE POWER WAS INCREASED FOR TAKEOFF, THE NO. 1 ENGINE ACCELERATED BEYOND TARGET EPR. ENGINE SHUT DOWN HAD TO BE DONE WITH THE FUEL SHUT OFF LEVER. THE ASYMMETRIC THRUST WAS CONTROLLED WITH NOSE WHEEL STEERING. BEFORE THE AIRPLANE COULD BE STOPPED THE NOSE WHEELS SEPARATED FROM THE LANDING GEAR. THE INVESTIGATION REVEALED THAT THE FUEL PUMP OUTPUT SPLINE TO THE FUEL CONTROL HAD STRIPPED. IT OCCURRED AT SUCH A TIME THAT THE FUEL CONTROL SENSED AN UNDERSPEED & INCREASED FUEL FLOW. MISALIGNMENT OF THE SPLINE SHAFT RESULTED FROM IMPROPER MACHINING DURING PUMP MODIFICATION. THE NOSE GEAR INNER CYLINDER FAILED IN FATIGUE IN AN AREA OF EXCESSIVE GRINDING DURING OVERHAUL.

Flight

Event TypeAccident
Event Time14:55 EDT
Nearest AirportKinston Regional Jetport (0nm N)
Runway23
Runway Length7500 ft
Runway Width150 ft
Flight Plan FiledIFR
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftBoeing 737-222
Tail NumberN210US
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 121
Engines2
Engine TypeTurbofan
Engine DetailsP&W · JT8-D-9 · Turbofan · 14500

People & Injuries

Injury Summary2 injuries (2 minor injuries), 25 uninjured
Fatal0
Serious0
Minor2
Uninjured25
Total27
Crew 1Age 47 · First Class

Conditions

ConditionsVMC
LightDaylight
Wind240° @ 6 kt
Visibility10 sm
CeilingBroken clouds 20000 ft
Altimeter29.00 inHg
Observation Time19:02
Weather SourceWFAC

Appendix: Source Data