LZ Criteria/Inspection Flashcards Preview

Flashcards > LZ Criteria/Inspection > Flashcards

Flashcards in LZ Criteria/Inspection Deck (35):
1

Taxiway obstacle clearance distance

95' / 110' (C-130 / C-17)

2

Who is the approval authority for waivers if any criteria in the ETLs

MAJCOM director of operations (A3)

3

C-5 runway criteria

6000'x150'

4

LZ runway gradients

Max 3% longitudinal, but no more than 1.5% per 200 feet. 0.5% min - 3% max transverse gradients. Gradients must slope down to facilitate drainage.

5

Turnaround (hammerhead) dimensions

C-17: 180' long x 165' wide (including overrun/taxiway width)
C-130: 75 ' diameter minimum

6

What are the color identifiers for LZ inspections

Green
Amber
Red

7

C-17 runway criteria

3500'x90'

8

LZ clear zone gradients

Maximum 5% grade and may slope up or down to provide drainage.

9

C-130 runway criteria

3000'x60'

10

Taxiway infield area criteria

Clear of obstructions

11

TXY gradients

Max 3% longitudinal. Maximum 2% per 100' and should slope down for drainage. Transverse grades are the same as RWY.

12

LZ graded area criteria

A) 35' wide
B) Trees cut flush with ground
C) Remove rocks over 4"
D) Cut vegetation to 4" or less

13

LZ exclusion area dimensions

Length equal to RWY plus clear zones.
Unoccupied areas require a 700' width while built up areas require a 1000' width.

14

LZ maintained area criteria

A) 60' / 70' wide (C-130/C-17)
B) Remove rocks over 4"
C) cut vegetation to 6" or less

15

LZ primary surface dimensions

A) RWY plus 1000' length
B) 150' / 180' wide (C-130 / C-17)

16

LZ shoulder criteria

A) Remove all tree stumps and rocks
B) Paved for paved RWYs
C) Stabilized for semi-prepared
D) 10' wide

17

What are the LZ inspection discrepancies.

91. Potholes
92. Ruts
93. Loose aggregate
94. Dust
95. Rolling resistant material
96. Jet blast erosion
97. Stabilized layer failure

18

Parking apron obstacle clearance distance

85' / 100' (C-130 / C-17)
A) Measured from apron outer edge
B) Remove rocks over 6" above grade
C) Cut trees/vegetation to 6"
D) Maximum grade. +10% to -5%

19

LZ shoulder gradients

Max 3% longitudinal. 1.5% min - 5% max transverse grade. Shoulders should slope down to facilitate drainage.

20

LZ APZ dimensions

2500' length
500' / 1000' width (unoccupied / occupied)

21

Parking apron setback distance

190' / 215' (C-130 / C-17)

22

Taxiway clear area distance

70'
A) Remove rocks over 6" above grade
B) Cut trees/vegetation to 6"
C) Maximum grade +10% to -5%

23

Approach zone dimensions

10,500' length
500' inner edge width
2500' outer edge width

24

RWY/TXY offset distance

250' / 280' (C-130 / C-17)
Measure from RWY centerline to outer edge of TXY

25

LZ overrun gradients

0.5% min - 3.0% max and should slope downward from overrun centerline. Only one grade change is allowed and the first 100' of LZ overrun grade must match RWY grade.

26

What is the criteria for LZ overruns

A) Minimum 300' length
B) Same standard as RWYs

27

Taxiway width for a C-130

30'

28

What is the RCR for semi prepared airfields

Stabilized:
20 (dry)
10 (wet)
Unstabilized:
20 (dry)
4 (wet)

29

LZ graded area gradients

2% min - 5% max. Can slope up or down to provide drainage, however, gradients can't penetrate the primary surface.

30

Apron clearance between parked/taxiing aircraft

25' parked / 50' taxiing

31

LZ maintained area gradients

Maximum range of +10% to -20% and May slope up or down to provide drainage.

32

What is the RCR for a prepared airfield

23 (dry)
12 (wet)
5 (icy)

33

Parking apron gradients

1.5% - 3%

34

Taxiway width for a C-17

50'

35

What is the criteria for a LZ clear zone

A) 500' length
B) 270' / 320' wide (C-130 / C -17)
C) Remove or embed rocks over 4"
D) cut vegetation to with 6"