Piston helicopter

N4977E

1951 Hiller UH 12 Piston Helicopters

Registered No accidents on file
Built
1951
Serial
254
Class
Piston helicopter
Engines
Franklin 6A&6V335 series
Status
Current as of October 2026
Registered owner
Individual · sign in to see
Based
Thornton, NH
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Registration record

N4977E on the FAA register

Type
1951 Hiller UH 12 Piston Helicopters (FAA: Hiller UH-12A)
Serial
254
Engines
Franklin 6A&6V335 series
Registered owner
Individual — the name of an individual registrant is shown to signed-in users. Sign in
Thornton, NH
Certificate issued
2018-09-15
Airworthiness date
1983-08-01
Registration expires
2028-09-30
Airworthiness class
Multiple
Mode S (hex)
A62D6B
Mode S (octal)
51426553
Seats (type)
4
Weight class
up to 12,499 lb
Status
Current as of October 2026
Registry history

Timeline

  • 2028-09-30
    Registration expires (renewal due).
  • 2018-09-15
    Certificate of registration issued as N4977E.
  • 1983-08-01
    Airworthiness date on the current FAA record (multiple category).
  • 1951
    Manufactured (1951).
Overview

About N4977E

N4977E is a 1951 Hiller UH 12 Piston Helicopters (FAA model UH-12A), serial number 254. It is registered to an individual in Thornton, New Hampshire. The current certificate of registration was issued on September 15, 2018 and expires on September 30, 2028.

The FAA aircraft reference file describes the type as a piston helicopter, one Franklin 6A&6V335 series engine and 4 seats. Its airworthiness certificate is multiple category, dated August 1, 1983.

No NTSB accident or incident reports and no FAA preliminary notices are on file for N4977E.

Safety record

Accident & incident history

✓ No NTSB accident or incident reports and no FAA preliminary notices on file for N4977E.

Sources: NTSB aviation accident database and CAROL case system, FAA preliminary accident & incident notices. Search accident records

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Browse: Aircraft registered in New Hampshire· Registry by state· FAA registry stats

Data: FAA Aircraft Registry (October 2026), including deregistered aircraft; NTSB and FAA accident data; fyiAero listing history. Individual owners' names are shown to signed-in users and street addresses are never shown. Type figures are published specifications, not this aircraft's.