Twin piston

N1940S

1943 Lockheed 18-56

Registered 2 NTSB/FAA records
Built
1943
Serial
2509
Class
Twin piston
Engines
2 × Wright C9GC&D series
Status
Current as of October 2026
Registered owner
Individual · sign in to see
Based
Mount Pleasant, TX
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Registration record

N1940S on the FAA register

Type
1943 Lockheed 18-56
Serial
2509
Engines
2 × Wright C9GC&D series
Registered owner
Individual — the name of an individual registrant is shown to signed-in users. Sign in
Mount Pleasant, TX
Certificate issued
2011-11-22
Airworthiness date
1955-12-13
Registration expires
2027-11-30
Airworthiness class
Standard
Mode S (hex)
A17970
Mode S (octal)
50274560
Seats (type)
17
Weight class
12,500–19,999 lb
Status
Current as of October 2026
Registry history

Timeline

  • 2027-11-30
    Registration expires (renewal due).
  • 2011-11-22
    Certificate of registration issued as N1940S.
  • 1968-04-12
    Accident at Loreto,Mex, 72; damage: substantial.
  • 1968-04-11
    Accident at Loreto,Baja,Mex, 72; damage: substantial.
  • 1955-12-13
    Airworthiness date on the current FAA record (standard category).
  • 1943
    Manufactured (1943).
Overview

About N1940S

N1940S is a 1943 Lockheed 18-56, serial number 2509. It is registered to an individual in Mount Pleasant, Texas. The current certificate of registration was issued on November 22, 2011 and expires on November 30, 2027.

The FAA aircraft reference file describes the type as a twin piston, two Wright C9GC&D series engines and 17 seats. Its airworthiness certificate is standard category, dated December 13, 1955.

N1940S has 2 accident/incident records on file (most serious damage: substantial); details are below.

Safety record

Accident & incident history

1968-04-12 Accident · Loreto,Mex, 72 Damage: Substantial NTSB · 6 0045
Reported aircraft: Lockheed 18
Probable cause: STRUCK HB-HEY.
1968-04-11 Accident · Loreto,Baja,Mex, 72 Damage: Substantial NTSB · 6 0007
Reported aircraft: Lockheed 18
Probable cause: .OF MEXICO.STRUCK PARKED B-25,MEXICAN REGISTRATION

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

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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.