Dutch bombers over northern Australia
During 1942–43 the newly formed No. 18 (Netherlands East Indies) Squadron began flying North American B-25 Mitchell medium bombers from northern Australia against Japanese targets in Timor and the Netherlands East Indies. The squadron had been created in April 1942 as a joint Dutch–Australian unit, with Dutch pilots and aircraft operating alongside Australian aircrew and ground personnel.
These operations were dangerous and losses were frequent. One of the earliest and most poignant incidents involved the loss of Mitchell N5-140, one of the squadron’s first operational aircraft.
Aircraft N5-140
The aircraft was a North American B-25D Mitchell repainted in Netherlands East Indies Air Force markings after arriving in Australia. It carried the Dutch tricolour on the rear fuselage while retaining its original United States serial numbers on the tail.
From late 1942 the aircraft flew combat missions from the Darwin area, including reconnaissance and strike operations against Japanese-held territory.
The fatal mission – 5 April 1943
In the early hours of 5 April 1943, N5-140 took off from Darwin for an armed reconnaissance mission towards Japanese-occupied Timor. Shortly after departure the aircraft failed to join its formation and disappeared.
It later emerged that the Mitchell had crashed into the sea near Nightcliff, only a short distance from the coast. All five crew members were killed.
The crew represented the multinational character of No. 18 Squadron:
- Sgt-Maj G. Tijmons – pilot (Netherlands)
- Sgt K. van Bremen – co-pilot (Netherlands)
- Sgt-Maj F. J. M. van Wylick – radio operator (Netherlands)
- F/Sgt Ronald James Hill – wireless operator / gunner (Australia)
- Sgt George Bryanton Weller – wireless operator / gunner (Australia)
The probable cause was an engine failure shortly after take-off, although the exact circumstances were never fully established.
Recovery and commemoration
Australian Army personnel later recovered the remains of the crew. The loss was one of several early operational accidents suffered by the Dutch Mitchell units as they adapted to demanding tropical conditions and intense operational tempos.
The crash also highlights the heavy price paid by No. 18 Squadron. During the war the unit flew more than 900 operational sorties and lost over 100 airmen.
Surviving wreck remains
Remains of N5-140 still lie offshore near Nightcliff. Parts of the aircraft — including engines and wing structures — can occasionally be seen during extremely low tides.
Marine archaeologists have noted the remarkable preservation of the aluminium structure beneath marine growth, making the wreck an important surviving relic of Dutch aviation operations from Australia.
Today the site forms part of Darwin’s wider wartime heritage landscape and serves as a poignant reminder of the Dutch–Australian air war in northern Australia.
Significance
The story of B-25 N5-140 illustrates several important themes:
- the rapid reorganisation of Dutch air power in exile
- close operational cooperation between Dutch and Australian personnel
- the dangers of early medium-bomber operations from remote northern bases
- the continuing presence of physical wartime relics in Australia’s coastal landscape
As such, the wreck remains one of the most tangible Dutch aviation heritage sites associated with Darwin and No. 18 Squadron.
Two articles from ABC Darwin showed some of the remnants of the Dutch plane.
