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VFR Weather Min
Day VFR: 1000-3
Night VFR: 1500-5

Enroute AGL: 1000' unless restricted then 300' Day, 500' Night

If IFR capable
Mountainous: Local / Cross Country
800-3 / 1000-3
Night w/NVG:
1000-3 / 1000-5
Night Unaided:
1500-3 / 1500-5

New pilots IFR +400' & 1 mile or apr
After 6 mon +200'
(GOM 3.4)
NVG Airworthy Inspection
180 Days

NVG Required Equipment
Radio Altimiter
1 Controlable Landing Light
(per MEL all lights operative)

(Ops Man 7.2 B 6 a)
NVG Discrepancies
Edge Glow
Flashing, Flickering, or Intermitant Operation

(Ops Man 7.2 B 7 b)
NVG "Cosmetic Blemishes"
Bright Spots
Emission Points
Image Distortion
Black Spots
Chicken Wire
Fix Pattern Noise
Image Dispairity
Bright ?? Variation
Veiling Glow
NVG and unaided night feild of view

Unaided Vision
NVG - 40°
Unaided - 200°

NVG at best 20/40
Unaided is 20/200
NVG Focus
Focus from 11" to Infinity (108')
NVG Currancy
6 HNVGO as sole manipulator in Prior 2 Cal Months

If you have 6 HNVGO in Prior 4 months you get current without passengers.

(Helicopter Night Vision Goggle Operations)

FAR 61.57 (f)
(GOM 4.13.2)
NVG Parts
Objective Lens
Photo Cathode
Microchannel Plate
Phospher Screen
Fiber Optic Inverter
Eye Piece Diopter Lens

IPD - Interpupillary Adjustment
PAS- Pivot and Adjustment Shelf
Required Cockpit Items
• Aircraft Registration Certificate
• Airworthiness Certificate
• Weight and Balance data and Equipment List
• Aircraft Flight Manual
• Flashlight with two “D”: cells or equivalent
• Two microphones
• One headset with aircraft speakers or two headsets without speakers
• General Operations Manual (current version)
• Aircraft Flight Log and Engineering Report
• Required fire extinguishing equipment
• Printed emergency information cards for passenger briefing
• Minimum Equipment List if applicable
(GOM 4.4.4)
Landing Zone Size
Day 75' X 75'
Night 125' X 125'

(Ops Man 6.9 C 5 a)
Inadvertent IMC
Aircraft Control - AVIATE
Attitude: level
Heading: maintain
Torque: climb power
Airspeed: climb Vy
Workload: autopilot
Terrain awareness

(GOM p3-36)
Wind Limitations
Take off and landing 40 kts or 15 kts gust spread

Types of Hypoxia
Hypoxic Hypoxia
Altitude hypoxia, lack of oxygen absorbed by the body due atmospheric conditions
Hypemic Hypioxia
blood is not able to carry a sufficient amount of oxygen to the body's cells

Caused by anemia, disease, blood loss, deformed blood cells, or carbon monoxide (CO) poisoning
Stagnant Hypoxia
Oxygen deficiency in the body due to poor circulation

Pulling excessive Gs or cold temp. May cause hyperventilation
Histotoxic Hypoxia
Inability for the body to use oxygen
Caused by alcohol and other drugs such as narcotics and poisons
Obstacle / Obstruction
Animals (people)
Winds / Weather
Oxygen Altitudes
10k-12k more than 30 min
Over 12k

10k - 15k more than 30 min (10%)
Over 15k

(GOM and
Types of Fog
Radiation Fog -Winter in the valley
Advection Fog -Coast in the summer
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