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Aircraft record

N556D1959 Kaman HH-43B

DeregisteredUnclaimedSource: FAA, updated Oct 20, 2026

This N-number isn't registered right now. Below is its last known registration, canceled Sep 30, 2014.

Safety record in brief:1 NTSB accident (substantial damage, Jun 2001)1 AD may apply

Registration
Deregistered
Last based in
Ovando, MT
owner city / state
Engine
T53-L-13 · 1400 hp
Lycoming
Owners
1
since 1991
NTSB events
1
substantial, 2001
ADs may apply
1
confirm with A&P
Service reports
0
since 1995

Registration

FAA Aircraft Registry · Oct 20, 2026
Last registered owner
Individual owner
City, state
Ovando, MT
Certificate issued
Jan 10, 1991
Canceled
Sep 30, 2014
Airworthiness
Restricted · Agriculture and Pest Control, Forest, Other
Airworthiness date
Mar 31, 2004

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
Kaman
Model
HH-43B
Year
1959
Serial number
37
Aircraft type
Rotorcraft
Category
Land
Certification
Not Type Certificated
Seats
12
Engines
1
Max takeoff weight
Up to 12,499 lb
Mode S code
A71600

Engine

Make and model
Lycoming T53-L-13
Type
Turbo-shaft
Power
1400 hp

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

Ownership history

Ownership history from FAA records
  1. 1991 – 2014Individual ownerOvando, MT

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 · substantial damage

Jun 26, 2001 · Mullan, ID

The development of multiple fatigue cracks which ultimately resulted in the fracture of the 1st stage gas producer turbine rotor sealing disc. Factors contributing to the accident were mountainous/hilly and unsuitable terrain conditions.

Damage
Substantial
Injuries
Minor
Report
SEA01LA121

From NTSB records; matched by N-number.Read NTSB report (search CAROL for SEA01LA121)

ADs published since 1998 that may apply (1)

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
2002-15-04Honeywell International, Inc., (formerly AlliedSignal, Inc. and Textron Lycoming)…Sep 10, 2002Engine (T53-L-13)Only with: Engines with centrifugal compressor impellers having serial numbers 83317, 83327, 83328, or 83330 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 (0)

No Service Difficulty Reports found for this airframe since 1995.

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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