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Aircraft record

N7798R1998 Underland/Grothe/Finstrom MMII (MUSTANG II)

DeregisteredUnclaimedSource: FAA, updated Oct 19, 2026

This N-number isn't registered right now. Below is its last known registration, canceled Aug 13, 2013.

Safety record in brief:1 NTSB accident (substantial damage, Aug 2009)No ADs since 1998 matched

Registration
Deregistered
Last based in
Minneapolis, MN
owner city / state
Engine
I0360 SER · 180 hp
Lycoming
Owners
1
on record
NTSB events
1
substantial, 2009
ADs may apply
0
confirm with A&P
Service reports
0
since 1995

Registration

FAA Aircraft Registry · Oct 19, 2026
Last registered owner
Individual owner
City, state
Minneapolis, MN
Canceled
Aug 13, 2013
Airworthiness
Experimental · Amateur Built
Airworthiness date
Apr 23, 1999

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
Underland/Grothe/Finstrom
Model
MMII (MUSTANG II)
Year
1998
Serial number
428R
Aircraft type
Fixed wing single engine
Category
Land
Certification
Not Type Certificated
Seats
2
Engines
1
Max takeoff weight
Up to 12,499 lb
Mode S code
AA8DF6

Engine

Make and model
Lycoming I0360 Ser
Type
Reciprocating
Power
180 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. 1973 – 1976Watts Looney Nichols & Johnson INCOklahoma City, OK · different airframe: Beechcraft V35a S/N D-8895
  2. until 2013Individual ownerMinneapolis, MN

Individual owners are shown by city and state only.

Safety record

NTSB · Oct 15, 2026 · FAA ADs · Oct 19, 2026 · SDRs · Oct 16, 2026

NTSB events (1)

Accident · substantial damage

Aug 29, 2009 · Lantana, FL

The delay by both pilots to abort the takeoff resulting in a runway overrun. Contributing to the accident was the unintentional forward movement of the pilot's seat resulting in interference with the control stick.

Damage
Substantial
Injuries
None
Report
ERA09CA495

From NTSB records; matched by serial number.Read NTSB report (search CAROL for ERA09CA495)

ADs published since 1998 that may apply (0)

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.

No ADs published since 1998 matched this airframe or engine model.

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 19, 2026
  • NTSB accident and incident databaseAccidents and incidents since 1982updated Oct 15, 2026
  • FAA Airworthiness Directives (Federal Register)ADs published since 1998updated Oct 19, 2026
  • FAA Service Difficulty ReportsReports since 1995updated Oct 16, 2026

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