MISSED APPROACH SEGMENT

1. MISSED APPROACH SEGMENT REFRESHER

2. AIM Review missed approach criteria and missed approach variations

3. MISSED APPROACH SEGMENT • ALIGNMENT • AREA • OBSTACLE CLEARANCE

4. MISSED APPROACH OPTIONS • Straight Ahead • Turning • Combination Straight and Turning

5. AREA • Normally 15nm long • Width at start of area is the same as the final it joins • Width at end of area is 4nm of primary and 2nm of secondary area on each side of the course • In a turning missed approach the area is affected by three variables • width of the final at the missed approach point • aircraft approach categories • number of degrees in the turn • Must have positive course guidance to have secondary areas • Precision approach has 2 sections in missed approach

6. TURNING MISSED APPROACH RADII (NM) Table 2-7 Obstacle Approach Flight Path Clearance Radii Category Radii (R1) (R) A 2.6 1.3 B 2.8 1.4 C 3 1.5 D 3.5 1.75 E 5 2.5

7. MISSED APPROACH LENGTH • 15 NM (including turn distance) • TD = amt of turn x radius 57.3 • TD = 69 deg x 2.5 nm = 3.0 nm 57.3

8. 1 nm 12 nm 2 nm 4 nm

9. A A1 B Secondary Area origin A2 B1

10. 1000 ft 200 ft/NM MDA 152 ft/NM HMAS 40:1 SLOPE 12:1 SLOPE SECONDARY SECONDARY PRIMARY

11. 5 X 6076/40 = 759.5 1370 ft 1459 ft 5 NM 2299 ft 2500 ft

12. 1370 ft (4.5 X 6076/40) + (700/12) = ? 1459 ft 683.6 + 58.3 = 741.9 4.5 NM 2299 ft 700 ‘ 2500 ft

13. PENETRATING OBSTACLE OPTIONS What do you think we can do about penetrating obstacles? • Get rid of them. Cut them down or dismantle if possible. • Change the radial we are flying out so they are not in the missed approach area. • Publish a climb gradient which will ensure the aircraft will miss the obstacles. • Publish a higher MDA so that the aircraft will begin the missed approach higher.

14. ILS MISSED APPROACH 9860.69’ 3038.06’ Section 1b Section 1a 3038.06’ Section 1c

15. STRAIGHT MISSED APPROACH 13.77 NM DA 9860.69’ 2 NM Secondary Area 4 NM 40:1 OCS Primary Area 1NM 4 NM Secondary Area 2 NM

16. MISSED APPROACH RATIONALE 200 ft/NM 400’ HAT 152 ft/NM 3˚ GPA 200’ HAT 120’ HAT 330’ 28.5:1 34:1 35’ 78’ ASBL 1460’ 8400’ 13.377 NM

17. CLIMB GRADIENT • What is the min climb gradient in the missed approach? 200 FT/NM

18. SUMMARY Raven 17 in the MAP Roger Raven 17 contact Dep 119.9 leaving 3000