ANC87IA003

NTSB incident investigation · Boeing 727-22C · Anchorage, AK · October 15, 1986

Incident · No injuriesIncident investigationFinal report
Date
October 15, 1986, 13:35 local (21:35 UTC)
Place
Anchorage, AK
Injuries
115 uninjured
Damage
Minor damage
Phase of flight
Landing
Aircraft
N753ASBoeing 727-22C
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19861015063779I
Case key
4792

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the incident.

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Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Gear not extendedLanding - roll
Landing gear,nose gear assembly - disabled
Maintenance,major repair - improperOther maintenance personnelCause

Analysis

After departure, the flight crew retracted the landing gear and noticed a nose gear disagreement light. Upon arriving at Anchorage, the flight crew could not lower the nose gear through normal or manual means. The airplane landed with main gear extended and the nose gear retracted. Examination of the nose gear mechanisms revealed that the two links which exercise the pawl block locks had failed allowing the nose gear to remain in the fully retracted and locked position.

Aircraft

Registration
N753AS
Reported as
Boeing 727-22C
Category
Airplane
Serial number
19203
Airframe hours
45,697
Engine
P&W JT8-D-7, 14,000 lbs thrust, turbo jet
Damage
Minor damage
Flight
Business · Part 91
Operator
Arco Aviation
Registered owner
Alaska Airlines
Airworthiness certificate
Standard, Transport
Departed
Kuparak, AK
Destination
ANC · Anchorage, AK
Flight plan
IFR
Airport
ANC · Anchorage Int'L, runway 6L, 10,300 × 150 ft, asphalt

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
43
Certificate
Airline transport
Airplane ratings
Multi-engine land, Single-engine sea, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
9,000 total · 2,000 in this make and model · 120 in the last 90 days

Weather

Conditions
Visual (VMC) · Day
Wind
330° at 5 knots
Visibility
60 statute miles
Lowest ceiling
None
Temperature
46 °F, dew point 39 °F
Altimeter
29.00 inHg
Observed at
ANC, 25 nm away

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.