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 49–60
Page 61OCROpen in PDF

1 Oct 72 AC 70/7460- 1B Appendix 1 1900 1700

HIGH INTENSITY WHITE STROBE LIGHTS

DAY AND NIGHTTIME 1500 HEIGHT OF LIGHTS ON STRUCTURE IN FEET ABOVE GROUND LEVEL 1300 1100 900 700 /5 500 300 1/4 1/5 100 900 1000 1400 1500 13 LEVELS→L _ 4 LEVELS, +5 LEVELS

HEIGHT OF STRUCTURE IN FEET ABOVE GROUND LEVEL Page 15

Page 62OCROpen in PDF

AC 70/7460-1B Appendix i 1 Oct 72 2100-

HIGH INTENSITY WHITE STROBE LIGHTS 1900 DAY AND NIGHTTIME 1700 TOP HEIGHT OF LIGHTS ON STRUCTURE IN FEET ABOVE GROUND LEVEL • 1500 | 173 500 300 = 1/6 00 1500 HEIGHT OF STRUCTURE IN FEET ABOVE GROUND LEVEL 1600 -5 LEVELS - 1700 1800 1900 - 6 LEVELS 2000 2100 Page 16

Page 63OCROpen in PDF

1 Oct 72 AC 70/7460-1B Appendix 1 CHAPTER 8, 25a. SPECIFICATIONS FOR LIGHTING CHIMNEYS

AND SIMILAR OBSTRUCTIONS I

- COMPOSIIE:+

WHITE LIGHTS--- DAYTIME LIGHTING

HEIGHT OF LIGHTS ON STRUCTURE IN FEET ABOVE GROUND LEVEL RED LIGHTS - NIGHTTIME LIGHTING LEGEND:

- WHITE + RED BEACON WHITE + RED OBSTRUCTION LIGHT

RED OBSTRUCTION LIGHT

- RED BEACON 1000 800 600 -TOP · 2/3 400 200 2/3 1/2 2/5 11/3 1/3 150 300 450 009 750 900 2 LEVELS 3 LEVELS_ -4 LEVELS- →5 LEVELS-→6 LEVELS-→

HEIGHT OF STRUCTURE IN FEET ABOVE GROUND LEVEL Page 17

Page 64OCROpen in PDF

A0 70/7460-11 Appendix 1 1 Oct 72 21001t T900

OMPOSITE 1700 WHE LIGHT KED LIGHTS - MIGHTTIME LIGHTING DAYTIME LIGHTING LEGEND WHITE + RED BEACON!

3 1500 RED OBSTRU. NON UG MINE A RED OBSTRUCTON LIGHT СУПОУЄ СОВУ. RED BEACON Y300 HEIGHT OF MORTS ON STRUCTURE 7100 900 Her 819г ·06 500 †3/7 †3/8 + 1/3 (37167P - 3/10 200 † 2/91 75 100 1000" 1050" fІї6- -98= 1350 1400

HEIGHT OF STRUCTURE IN FEET ABOVE GROUND LEVEL Page 18

Page 65OCROpen in PDF

1 Oct 72 AC 70/7460-1B Appendix 1 2100 COMPOSITE:

WHITE LIGHTS -- DAYTIME LIGHTING

RED LIGHTS ---NIGHTTIME LIGHTING LEGEND:

1900 WHITE + RED BEACON - -WHITE + RED OBSTRUCTION LIGHT

RED OBSTRUCTION LIGHT-

DRED BEACON- -ТОР 1700 1012/13 OP HEIGHT OF LIGHTS ON STRUCTURE IN FEET ABOVE GROUND LEVEL 1500 721/11

- 1300 -£1/8 - 1100 900 ‡EL/9 700 =5/13C = 5/14:

[1/З - 4/13- 500 = 1/4 Header - 3/13 3/141 300i +1/6 2/13 :N/7 100 +1/12- 11/131111 1500 • I! LEVELS! 1650 -12 LEVELS 1800 1*13 LEVELS: 195914 LEVELS 2100

HEIGHT OF STRUCTURE IN FEET ABOVE GROUND LEVEL Page 19