Description
VO-540 Series
-A1A, -B1A, -B1B, -B1C & -B1D.
VO-540-B1A……………………………. Hiller Aircraft. Raven (UH-12E)
VO-540-B1B …………………………….Bell Helicopter. Ranger (47J-2)
VO-540-B1D……………………………. Hiller Aircraft. Raven (UH-12E)
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