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 46–57
Page 58OCROpen in PDF

AC 70/7460-1B Appendix 1 1 Oct 72 2100 1900 AVIATION RED OBSTRUCTION LIGHTING (NIGHTTIME) LEGEND:- 1700 • OBSTRUCTIONS LIGHTS - CODE BEACONS:

HEIGHT OF LIGHTS ON STRUCTURE IN FEET ABOVE GROUND LEVEL 1500 1300 1100 OP 900 700 ₴5/9T 500 3/ T/3 3/10 300 2/9 1/5 100: 900 1*7 LEVELS- 1/7 10501 8 LEVELS— - 1/8 1200 -9 LEVELS →10 LEVELS→ 1350 1/10 - 150C

HEIGHT OF STRUCTURE IN FEET ABOVE GROUND LEVEL Page 12

Page 59OCROpen in PDF

1 Oct 72 AC 70/7460- 1B Appendix 1 2100 -AVIATION RED OBSTRUCTION LIGHTING (NIGHTTIME) LEGEND:

CODE BEACONS 1900 OBSTRUCTION LIGHTS = OP 1700 OP HEIGHT OF LIGHTS ON STRUCTURE IN FEET ABOVE GROUND LEVEL 1500 70/ 1/01

• 1300 ğ/11 1100 8/11 37/11 - 7/121 ~ 2/1 900 6/11 700 = 1/3 4/13 12/7 500 3/11 1/4 3/13 300 2/13 100 - 1/13 1/14 1500 1650 1800 - 13 LEVELS -195-14 LEVELS - 2100 11 LEVELS 12 LEVELS -

HEIGHT OF STRUCIURE IN FEET ABOVE GROUND LEVEL Page 13

Page 60OCROpen in PDF

AC 70/7460-1B Appendix i 1 Oct 72 CHAPTER 7, 22a.

SPECIFICATIONS FOR LIGHTING

CHIMNEYS AND

SIMILAR OBSTRUCTIONS

HEIGHT OF LIGHTS ON STRUCTURE IN FEET ABOVE GROUND LEVEL HIGH INTENSITY WHITE STROBE LIGHTS DAY AND NIGHTTIME 1200 1000 TOP 600 400 200 1/3 150 1 LEVEL++ 300 400 - 2 LEVELS- 500 600 700 800 900 Page 14 HEIGHT OF STRUCTURE IN FEET ABOVE GROUND LEVEL - 3 LEVELS.

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