TY  - BOOK
AU  - Office of Flight Operations
TI  - Private rotorcraft-helicopter (RH)
T2  - Practical test standard
U1  - 629.13352 
PY  - 1990///]
CY  - Seattle, WA : 
PB  - ASA Publications, 
KW  - Helicopter
KW  - Aeronautics.
KW  - Airplanes.
N1  - "FAA-S-8081-HB"
ER  -