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Aircraft record

N70410Bell UH-1L

DeregisteredUnclaimedSource: FAA, updated Oct 20, 2026

This N-number isn't registered right now. Below is its last known registration, canceled Sep 19, 2013.

Safety record in brief:1 NTSB accident (destroyed damage, Sep 1995)8 ADs may apply1 service difficulty report

Registration
Deregistered
Last based in
Provo, UT
owner city / state
Owners
1
since 1995
NTSB events
1
destroyed, 1995
ADs may apply
8
confirm with A&P
Service reports
1
since 1995

Registration

FAA Aircraft Registry · Oct 20, 2026
Last registered owner
Mountain West Helicopters L L C
Owner type
Corporation
City, state
Provo, UT
Certificate issued
Jul 18, 1995
Canceled
Sep 19, 2013

We never show street addresses, even though they appear in the public FAA file. Individual owners are shown by city and state only.

Airframe & engine

FAA Registry + type data

Airframe

Manufacturer
Bell
Model
UH-1L
Serial number
157855
Aircraft type
Rotorcraft
Category
Land
Certification
Type Certificated
Seats
6
Engines
1
Max takeoff weight
Up to 12,499 lb
Type certificate data sheet
H4NM
Mode S code
A965FE

Engine

Type
Turbo-shaft

Total time and engine hours aren't public. They appear here once the owner adds logbooks.

Ownership history

Ownership history from FAA records
  1. 1995 – 2013Mountain West Helicopters L L CProvo, UT

Individual owners are shown by city and state only.

Safety record

NTSB · Oct 15, 2026 · FAA ADs · Oct 20, 2026 · SDRs · Oct 16, 2026

NTSB events (1)

Accident · destroyed

Sep 18, 1995 · Grace, ID

the fatigue failure of the centrifugal impeller and the lack of suitable terrain for a forced landing. Factors contributing to the accident were: the lack of required compliance with the FAA Airworthiness Directive by the operator, the insufficiently defined FAA procedure within the AD (failure to include the -07 impeller and establish a cycle count program), and inadequate rotor RPM.

Damage
Destroyed
Injuries
Serious
Report
SEA95LA221

From NTSB records; matched by serial number.Read NTSB report (search CAROL for SEA95LA221)

ADs published since 1998 that may apply (8)

These match the airframe or engine model. Whether each one applies, and whether it's been complied with, depends on serial numbers, equipment and logbook entries. Applicability must be confirmed by a mechanic against the aircraft's records.

ADSubjectEffectiveApplies to
2014-03-10Various Restricted Category HelicoptersMar 26, 2014Airframe (UH-1L)Only with: Restricted category helicopters with cable assembly part number 205-001-720-001 installed.
2002-20-01Model HH-1K, TH-1F, TH-1L, UH-1A, UH-1B, UH-1E, UH-1F, UH-1H, UH-1L, and UH-1P; and…Nov 6, 2002Airframe (UH-1L)Only with: Main rotor tension-torsion strap P/N 204-012-122-1, 204-012-122-5, 2601399, or 2606650 installed; manufactured by BHTI for the US Armed Forces.
2002-13-51Model HH-1K, TH-1F, TH-1L, UH-1A, UH-1B, UH-1E, UH-1F, UH-1H, UH-1L, and UH-1P; and…Aug 19, 2002Airframe (UH-1L)Only with: Tail rotor grip P/N 205-011-711-101 installed; helicopters manufactured by Bell for the U.S. Armed Forces.
2002-01-31Model HH-1K, TH-1F, TH-1L, UH-1A, UH-1B, UH-1E, UH-1F, UH-1H, UH-1L, UH-1P, and…Feb 1, 2002Airframe (UH-1L)Only with: Manufactured for the U.S. Armed Forces, with main rotor mast P/N 204-011-450-007, -105, or -109, or main rotor trunnion P/N 204-011-105-001 installed.
2000-15-21 R1Bell Helicopter Textron Inc.-Manufactured Model HH-1K, TH-1F, TH-1L, UH-1A, UH-1B…Nov 7, 2000Airframe (UH-1L)Only with: Manufactured by BHTI for the U.S. Armed Forces, with main rotor mast assembly P/N 204-011-450-001 or -005 installed.
Show all 8 ADs
ADSubjectEffectiveApplies to
2000-15-21Bell Helicopter Textron Inc.-Manufactured Model HH-1K, TH-1F, TH-1L, UH-1A, UH-1B…Aug 9, 2000Airframe (UH-1L)Only with: Main rotor mast assembly P/N 205-011-450-001 or -005 installed.
99-07-15Bell Helicopter Textron, Inc.- manufactured Model HH-1K, SW204, SW204HP, SW205…May 3, 1999Airframe (UH-1L)Only with: Tail rotor yoke P/N 212-011-702 (all dash numbers), P/N 212-010-704 (all dash numbers), or P/N 212-010-744 (all dash numbers) installed.
97-20-09Bell Helicopter Textron (Bell)- manufactured Model HH-1K, TH-1F, TH-1L, UH-1A, UH-1B…May 28, 1998Airframe (UH-1L)Only with: Tailboom vertical fin spar P/N 205-032-899, 205-030-846, or 205-032-851, all dash numbers, installed.

AI-extracted — verify against original. Matched from each AD's applicability section; ADs replaced by a later AD are left out.

Service Difficulty Reports (1)

Reports of failures and defects that operators and repair stations sent to the FAA since 1995. A report describes one finding; it is not an accident.

  • Engine · impeller · failedSep 18, 1995

    DURING ENGINE OPERATION, CENTRIFUGAL COMPRESSOR IMPELLER FAILED CAUSING UNCONTAINED PARTS EXITING FROM ENGINE COMPRESSOR SPOOL CORE DURING FLIGHT. THIS UNCONTAINED FAILURE RESULTED IN POWERPLANT POWER SHUT DOWN WITH RESULTANT HARD LANDING OF AIRCRAFT. RECOMMEND THAT PART 91 RESTRICTED CATAGORY…

    From FAA Service Difficulty Reports; matched by N-number and serial number.

Related aircraft

Show all 8 related aircraft

Sources

  • FAA Aircraft RegistryRegistration, owner city and state, airframe, engineupdated Oct 20, 2026
  • NTSB accident and incident databaseAccidents and incidents since 1982updated Oct 15, 2026
  • FAA Airworthiness Directives (Federal Register)ADs published since 1998updated Oct 20, 2026
  • FAA Service Difficulty ReportsReports since 1995updated Oct 16, 2026

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