AC 70/7460-1B

Historical

Advisory circular · Obstruction Marking and Lighting

A newer version is currentThis is a historical version. AC 70/7460-1M is the version in force, approved November 6, 2020.
Last reviewed
October 31, 2023
Cancelled by
AC70/7460-1C
Family
AC 70/7460-1 · 7 versions
Revision
B, 1B
14 CFR parts
77
14 CFR sections
§ 77.17

Guidance, not mandatory unless a rule or AD requires it. DRS record last changed November 21, 2025.

Show pages 34–45
Page 46OCROpen in PDF

1 Oct 72 AC 70/7460- 1B

(16) Structures more than 1950 feet but not more than 2100 feet:

(a) Red lights, apply 19b(2) (n).

(b) White lights, 1 At a near top level apply 2la(1).

At approximately six-sevenths, nine-fourteenths, onehalf, five-fourteenths, and one-seventh of the overall height apply 21a(3).

b. Antenna Towers and Similar Open Structures. Not applicable to these types of structures at this time. * Chap. 8 Par. 25 Page 47 (and 48)

Page 47OCROpen in PDF

1 Oct 72 AC 70/7460- 1B Appendix 1

DOUBLE OBSTRUCTION

LIGHT FITTING (Fresnel Globe)

SINGLE OBSTRUCTION

LIGHT FITTING (Fresnel Globe) 300 mm ELECTRIC CODE BEACON (Fresnel Lens) 24-Inch Double End 24-Inch Single End 36-Inch Double End ROTATING BEACONS Pace 1

Page 48OCROpen in PDF

AC 70/7460-1B 1 Oct 72 Appendix i A-More than 150 ft. but not more than 300 fl.

A -Not more than 150 fl.

A-More than 300 ft. but not more than 450 ft.

PAINTING AND LIGHTING OF TOWERS, POLES AND SIMILAR OBSTRUCTIONS Page 2

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1 Oct 72 AC 70/7460-1B Appendix i Not less than 5 ft.

nor more than 10 ft.

Not less than 5 ft.

nor more than 10 ft Special double obstruction light

SUSPENSION TYPE

OBSTRUCTION LIGHT

INSTALLATION A-More than 300 ft. but not more than 450 fl.

A-Not more than 150 ft.

PAINTING AND LIGHTING OF SMOKESTACKS AND SIMILAR OBSTRUCTIONS Page 3

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AC 70/7460-1B Appendix 1 1 Oct 72

LIGHTING MARKING LIGHTING MARKING A-More than 150 ft. but not more than 300 fl. A and B- 15 ft. A and B-Not more A -5 ft. or more B-Not more than 150 ft. or more than 150 ft. B-Less than 15 ft.

PAINTING AND LIGHTING OF WATER TOWERS AND SIMILAR OBSTRUCTIONS Page 4

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1 Oct 72 AC 70/7460-1B Appendix 1

LIGHTING

MARKING A-More than 150 ft. but not more than 300 ft. A and B- 15 ft. or more B-Not more than 150 ft.

PAINTING AND LIGHTING OF WATER TOWERS AND SIMILAR OBSTRUCTIONS

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AC 70/7460-1B Appendix i 1 Oct 72

- B Á-More than 150 fl. but not more than 300 fl. LIGHTING A and B-15 ft. or more MARKING A and B-Not more LIGHTING A-5 ft. or more MARKING than 150 ft. B- Less than 15 ft.

B-Not more than 150 ft.

PAINTING AND LIGHTING OF GAS HOLDERS AND SIMILAR OBSTRUCTIONS Pade f

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1 Oct 72 S# 20/74601

PAINTING OF SI

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AC 70/7460-1B Appendix 1 1 Oct 72 BRIDGE Page 8

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1 Oct 72 АС 70/7460-1B Appendix 1 1 Do Not Paint I white

VORTAC-VOR & TVOR SIMILAR

END SIDE PLAN

TYPICAL BUILDING

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AC 70/7460-1B Appendix 1 I Oct 72 Do Not Paint Rooty IRAILER (Mark as shown) « Plastic Rail-Do Not Paint, SeE Nor So Not Mert Waveguide .owrea PLAN ROOF

DIRECTIONAL LOCALIZER LOCALIZER ANTENNA

WAYEGUIDE SHELTER SUPPORI

ELEVATION Note: Supports up to 15'high paint white. Over 15' paint three equal horizontal bands, middle band white, others aviation surface orange.

PLAN "V" RING ANTENNA ARRAY PLATFORM Page 10

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1 Oct 72 AC 70/7460-1B Appendix 1 CHAPTER 6, 19a

SPECIFICATIONS FOR

LIGHTING TOWERS, POLES

AND SIMILAR OBSTRUCTIONS

AVIATION RED OBSTRUCTION LIGHTING (NIGHTTIME) HEIGHT OF LIGHTS ON STRUCTURE IN FEET ABOVE GROUND LEVEL 1200 LEGEND:

CODE BEACONS

OBSTRUCTION LIGHTS 1000 TOP 800 TOP 5/6 600 TOP 400 TOP 3/4 1/2 2/5 1/3 200 150 300 450 600 750 900 12 LEVELS 3 LEVELS- *+4 LEVELS - 5 LEVELS - →#6 LEVELS-→

HEIGHT OF STRUCTURE IN FEET ABOVE GROUND LEVEL Page 11