Midsize jet

N725MK

1968 Lockheed 1329-23E

Registered No accidents on file
Built
1968
Serial
5123
Class
Midsize jet
Engines
4 × P & W JT12A-6 6A
Status
Current as of October 2026
Registered owner
Ken Sale Resources Inc (Corporation)
Based
Southlake, TX
Registration record

N725MK on the FAA register

Type
1968 Lockheed 1329-23E
Serial
5123
Engines
4 × P & W JT12A-6 6A
Registered owner
Ken Sale Resources Inc
Southlake, TX
Certificate issued
2007-02-20
Airworthiness date
1968-09-30
Registration expires
2029-08-31
Airworthiness class
Standard · transport
Mode S (hex)
A9B73C
Mode S (octal)
52333474
Seats (type)
12
Weight class
20,000 lb and over
Status
Current as of October 2026
Registry history

Timeline

  • 2029-08-31
    Registration expires (renewal due).
  • 2007-02-20
    Certificate of registration issued as N725MK.
  • 1968-09-30
    Airworthiness date on the current FAA record (standard category (transport)).
Overview

About N725MK

N725MK is a 1968 Lockheed 1329-23E, serial number 5123. The FAA register lists Ken Sale Resources Inc as the registrant in Southlake, Texas. The current certificate of registration was issued on February 20, 2007 and expires on August 31, 2029.

The FAA aircraft reference file describes the type as a midsize jet, four P & W JT12A-6 6A engines and 12 seats. Its airworthiness certificate is standard category (transport), dated September 30, 1968.

No NTSB accident or incident reports and no FAA preliminary notices are on file for N725MK.

Safety record

Accident & incident history

✓ No NTSB accident or incident reports and no FAA preliminary notices on file for N725MK.

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 Texas· 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.