NON PRECISION APPROACHES Flashcards
NON PRECISION APPROACH
COURSE GUIDANCE WITH NO GLIDESLOPE OR ALTITUDE GUIDANCE
MDA
USES STEP DOWN FIXES
TIME FOR MISSED APPROACH IS BASED OFF GROUND SPEED
MDA
MINIMUM DESCENT ALTITUDE, LOWEST AUTHORIZED ALTITUDE WHILE ON FINAL APPROACH OR WHILE CIRCLING (91.175)
LOCALIZED APPROACH
PROVIDES COURSE GUIDANCE
5° (2.5° FROM CENTERLINE)
LOCATED ON OPPOSITE END OF RUNWAY
18 MILES UPTO 4,500’ FROM ATENNA
LOCALIZER BACK COURSE
NO REVERSE SENSING WITH HSI
REVERSE SENSING WITH A VOR AND SET TO THE INBOUND COURSE OF THE FRONT COURSE
LDA
LOCALIZER TYPE DIRECTIONAL AID
COMPARABLE TO LOCALIZER BUT NOT APART OF ILS
3°-6° WIDE
NOT ALIGNED WITH RUNWAY BUT STRAIGHT IN MAY APPLY IF WITHIN 30°
IDENTIFIED BY AN I, LIKE A LOCALIZER
SDF
SIMPLIFIED DIRECTIONAL FACILITY
SIMILAR TO LOCALIZER BUT MUCH LESS PRECISE
6° OR 12° WIDE
3 LETTER IDENTIFIER
USABLE 35° EITHER SIDE OF CENTERLINE, OTHERWISE UNRELIABLE
VOR APPROACHES
FULL SCALE DEFLECTION = 10° FROM CENTERLINE 20° TOTAL
STEP DOWN FIXES USING DME OR CROSS RADIALS
DME ARC APPROACH
-
ASR
AIRPORT SURVEILLANCE RADAR
PROVIDES AZIMUTH GUIDANCE ONLY
CIRCLING APPROACH
APPROACH THAT IS NOT WITHIN 30° OF CENTERLINE
PROVIDE 300’ AGL OBSTACLE
ALWAYS FLY HIGHER ALTITUDE IF POSSIBLE
CIRCLING APPROACH CATEGORY RADIUS
A: 1.3NM B: 1.5NM C: 1.7NM D: 2.3NM E: 4.5NM
CONTACT APPROACH
MUST BE REQUESTED BY PILOT
AIRPORT MUST HAVE IAP
GROUND VISIBILITY OF AT LEAST 1 MILE VISIBILITY
REMAIN CLEAR OF CLOUDS
VISUAL APPROACH
ISSUED BY ATC
NEED AIRPORT OR PRECEDING TRAFFIC IN SIGHT
CEILING OF 1,000’ AGL AND 3 MILES VISIBILITY
REMAIN CLEAR OF CLOUDS