TAC GOUGE
Time Control Techniques
TEN PERCENT RULE:
-Apply 10% of your planned IAS to existing IAS
-Hold for 10 minutes
-You will gain/lose 1 minute
TEN KNOT RULE OF THUMB:
-Increase/decrease groundspeed by 10 knot from planned
-You will gain/lose 1 second for every 1 NM traveled
-Will get you within a second or two every time
INCREMENTAL METHOD:
-Divide planned IAS by 6
-Apply this to planned airspeed for 1 minute
-You will gain/lose 10 seconds
CONSTANT GROUNDSPEED:
-Flight plan at a constant groundspeed
-Maintain that groundspeed
-Works best with 210-220 kts groundspeed
INCREMENTAL METHOD:
-Increases/decrease planned IAS by same number of seconds late/early
-Hold this correction for the time (in seconds) equal to flight planned IAS
TURNING EARLY/LATE:
-At 210 KIAS, you travel 3.65 NM per minute or 1 NM in 16 seconds
S-TURNS:
-Turn 30o off course, hold for 1 minute
-Turn back 60o, hold for 1 minute
-Turn to original course
-You will lose 16 seconds
Turn 45o off course, hold for 1 minute
Turn back 90o, hold for 1 minute
-Turn to original course
-You will lose 30 seconds
-Turn 60o off course, hold for 1 minute
-Turn back 120o, hold for 1 minute
-Turn to original course
-You will lose 45 seconds
Extraction Time
Non-Towplate (All Chutes) 5.0 sec
Towplate (15’ Chute) 2.7 sec
Towplate (22’ Chute) 3.5 sec
Towplate (28’ Chute) 3.4 sec
Towplate (2-28’ Chutes) 3.2 sec
Towplate (3-28’ Chutes) 3.0 sec
LZ GOUGE
CRP XTRK: > 150 meters (164 yards
CRP VERT: 2000 above PI elevation = 200 ft above/below
Less than 2000 ft above PI elevation = 200 ft above or 10% below the drop altitude (AGL)…minimum of 50 ft.
Required Advisories:
Personnel: 20 min, 10 min, 6 min, 1 min, 5 sec
Equip/CDS: 1 min & 5 sec