Turbine helicopter

N177T

McDonnell Douglas 500-E

Registered No accidents on file
Built
—
Serial
0524E
Class
Turbine helicopter
Engines
Allison 250-C20 series
Status
Current as of October 2026
Registered owner
Ellis LLC (LLC)
Based
Helena, MT
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Registration record

N177T on the FAA register

Type
McDonnell Douglas 500-E
Serial
0524E
Engines
Allison 250-C20 series
Registered owner
Ellis LLC
Helena, MT
Certificate issued
2025-09-24
Airworthiness date
1995-10-04
Registration expires
2032-09-30
Airworthiness class
Standard · normal
Mode S (hex)
A134D7
Mode S (octal)
50232327
Seats (type)
4
Weight class
up to 12,499 lb
Status
Current as of October 2026
Registry history

Timeline

  • 2032-09-30
    Registration expires (renewal due).
  • 2025-09-24
    Certificate of registration issued as N177T to the current registrant.
  • 2017-06-21
    N177T previously assigned to a Piper Super Cub PA-18-105 / PA-18 Super Cub (s/n 18-2291); cancelled.
  • 1995-10-04
    Airworthiness date on the current FAA record (standard category (normal)).
Overview

About N177T

N177T is a McDonnell Douglas 500-E, serial number 0524E. The FAA register lists Ellis LLC as the registrant in Helena, Montana. The current certificate of registration was issued on September 24, 2025 and expires on September 30, 2032.

The FAA aircraft reference file describes the type as a turbine helicopter, one Allison 250-C20 series engine and 4 seats. Its airworthiness certificate is standard category (normal), dated October 4, 1995.

No NTSB accident or incident reports and no FAA preliminary notices are on file for this airframe as N177T. 2 earlier records involve a different aircraft that carried the same N-number.

Safety record

Accident & incident history

1975-09-01 Accident · Atkinson,Ks, 16 Damage: Destroyed NTSB · 3 3603
Reported aircraft: Piper PA-18 — a different aircraft that carried the N177T registration before this airframe.
Probable cause: ANTITY BFR TKOF DTMND L TANK NEAR EMPTY,SELECT L.
1968-11-02 Accident · Punta Gorda,Fla, 09 Damage: Substantial NTSB · 3 4133
Reported aircraft: Piper PA-18 — a different aircraft that carried the N177T registration before this airframe.
Probable cause: UT OF ACFT,ACCIDENTALLY HIT THROTTLE. HIT HANGAR.

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 Montana· 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.