MISSIONARY AVIATION REPAIR CENTER· ICAO24 acb586· last seen Dec 2025

N918MR is a Beechcraft U-21, a twin-engine turboprop operated by MISSIONARY AVIATION REPAIR CENTER. SkyMeter has tracked 88 flights totalling 129 hours of airtime via ADS-B. The most frequent segment is PANC to PASX. Service window in our records spans 202 days. Of those flights, 6 (6.8%) carry at least one detected incident: a go-around, unstable approach, stall warning, or runway excursion. The Beechcraft U-21 has a maximum takeoff weight of 9,650 lb, light wake category.

About the Beechcraft U-21

The Beechcraft U-21 Ute is the military designation for variants of the King Air 90 series twin-turboprop utility aircraft, developed in the 1960s for the U.S. Army and Air Force. Built on the proven King Air platform, the U-21 served primarily as a liaison, light cargo, and personnel transport aircraft, with some variants configured for electronic warfare training and reconnaissance support.

The type saw extensive service during the Vietnam War and remained in military inventories through the 1990s, prized for its reliability, short-field performance, and ability to operate from austere airstrips. Powered by two Pratt & Whitney Canada PT6A turboprops, the U-21 could carry up to eight passengers or equivalent cargo, with a service ceiling around 27,000 feet and a range exceeding 1,000 nautical miles. Its rugged construction and straightforward systems made it popular for utility missions where larger transports were impractical.

Many U-21s have since entered civilian service after military retirement, often retaining their original designator for registration purposes while operating in corporate, charter, or specialized roles. The type's combination of turboprop efficiency, twin-engine redundancy, and King Air lineage has given it enduring appeal in both military surplus and general aviation markets. SkyMeter has tracked flights across airframes and operators, with the largest observed operator.

FLIGHTS
88
all time
FLOWN HOURS
129
tracked time
📍
AIRPORTS VISITED
10
unique
📡
CALLSIGNS
1
17 routes
📅
SERVICE PERIOD
5/27/2025 → 12/15/2025
first → last
INCIDENT RATE
6.8%
6 flagged

Top routes

By flight count

10
7
6
4
2
1
1
1
1
5Z4 PASX
1

Flight numbers

Most-flown by this airframe

1

Aircraft specifications

Beechcraft U-21

Engines
Twin Turboprop
Vref (approach)
100 kt
MTOW
9,650 lb
Wake category
L

Recent flights

Newest 50 operations of N918MR

50
12/16/2025
1h 8m
No alerts
12/16/2025
1h 8m
△ Low approach-stability score
12/15/2025
16m
No alerts
12/15/2025
4h 50m
No alerts
12/15/2025
6h 31m
No alerts
12/11/2025
2h 27m
△ Low approach-stability score
12/9/2025
31m
No alerts
12/9/2025
35m
No alerts
11/24/2025
26m
No alerts
11/23/2025
29m
No alerts
11/23/2025
1h 36m
No alerts
11/20/2025
2h 24m
No alerts
11/13/2025
30m
No alerts
11/13/2025
44m
No alerts
11/13/2025
24m
No alerts
11/13/2025
2h 21m
No alerts
10/26/2025
2h 5m
No alerts
10/24/2025
2h 49m
No alerts
9/29/2025
1h 14m
No alerts
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