AC 70/7460-1F

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
Cancels
AC70/7460-1E
Family
AC 70/7460-1 · 7 versions
Revision
F, 1F
14 CFR parts
77, 91
14 CFR sections
§ 77.13§ 91.105

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

Show pages 32–43
Page 44OCROpen in PDF

AC 70/7460-1F 9/27/78

(4) Covers for Aeronautical Lights. Military Specification MIL-C-7989 Covers; Light Transmitting (for Aeronautical Lights).

b. High Intensity White Obstruction Lighting Systems. FAA Advisory Circular Number 150/5345-43, FAA/DOD Specification L-856, High Intensity Obstruction Lighting Systems.

c. Approved Manufacturers. FAA Advisory Circular Number 150/5345-1, Approved Airport Lighting Equipment, lists the approved airport lighting equipment and manufacturers qualified to supply their product in accordance with the indicated specification requirements.

d. Installation and Maintenance. FAA Advisory Circular Number 150/5340-21, Airport Miscellaneous Lighting Visual Aids, provides guidance for the installation, maintenance and testing and inspection of the red beacon and steady burning obstruction lighting.

e • Availability. The standards and specifications listed above may be obtained free of charge from the designated facility:

(1) Military Specifications:

Commanding Officer Naval Publications and Forms Center 5801 Tabor Avenue Attention: NPFC-105 Philadelphia, Pennsylvania 19120 Phone: (215)-697-2000

(2) FAA Specifications:

Chiei, Configuration Control Branch, AAF-110 Department of Transportation Federal Aviation Administration 800 Independence Avenue, S.W.

Washington, D.C. 20591

(3) FAA Advisory Circulara:

Department of Transportation Publications Section, M-443.1 400 7th Street, S.W.

Washington, D.C. 20590 Chap. 9 Page 38 Par. 27

Page 45OCROpen in PDF

9/27/78 AC 70/7460-15

f. RECOMMENDED LAMP EQUIPMENT Multiple Circuits Volts Lights Single Obstruction Double & Typical Service Watts 116 125 120V 120V Amps. or A-21 Bulbs A-21 Md. Scr Md. PE. Base Life (Hours) Rated Lab. Average 6,000 6,000 Lumens Approx. 1,260 1,220 Specifications L-810 FAA L-810 L-7830 MIL L-7830 Flashing Beacon 700 120V PS-40 Mg. Pf. 6,000 11,200 446 L-6273 High 620 120V PS-40 Mg. Pf 3,000 11,200 446 I-6273 Intensity 480V White Obstruction. 240V 120V L-856 Lights

• Series Circuit Obstruction Lights 6.6A A-21 Md. Pf. 2,000 - ,020 L-810 I-7830 NOTE: assures the necessary lumen output. Rated voltage of incandescent lamps shall be within plus or minus 3 percent of the voltage across the lamp socket. This Chap. 9 Par. 27 Page 39

Page 46OCROpen in PDF

9/27/78 AC 7077460-1F Appendix 1 HOLEY

SINGLE OBSTRUCTION

LIGHT FITTING (Fresnel Globe) 300 mm BEACON DOUBLE OBSTRUCTION (Fresnel Lens)

LIGHT FITTING (Fresnel Globe)

TYPES OF OBSTRUCTION LIGHTS Fig. 1.

Page 47OCROpen in PDF

AC 70/7460-1F Appendix 1 9/27/78 Not less than 5 ft. ( .5m) nor more than 10 ft - (3m) More than 300 ft. (90m) but not more than 450 ft. (135m)

PAINTING AND LIGHTING OF CHIMNEYS, POLES, TOWERS

AND SIMILAR OBSTRUCTIONS Fig. 2.

Page 48OCROpen in PDF

9/27/78 AC 70/7460-1F Appendix 1

LIGHTING More than 150 fr. (45m) but LIGHTING not more than 300 ft. (90m) not more than 300 ft, (90m) More than 150 ft. (45m) but

PAINTING AND LIGHTING OF WATER TOWERS, STORAGE TANKS AND SIMILAR OBSTRUCTIONS Fig. 3.

Page 49OCROpen in PDF

AC 70/7460-1F Appendix 1 9/27/78 More than 150 ft. (45m) but not more than 300 ft. (90m)

PAINTING AND LIGHTING OF WATER TOWERS AND SIMILAR OBSTRUCTIONS Fig. 4.

Page 50OCROpen in PDF

9/27/78 AC 70/7460-1F appendix 1

PAINTING OF SINGLE PEDESTAL WATER TOWER BY TEARDROP PATTERN Fig. 5.

276-776 0 - 79 - 5 Page 5

Page 51OCROpen in PDF

AC 70/7460-1F 9/27/78 Appendix 1 Inboard lights recommended on all levels above height of shorter structure 200' or less (60m) Inboard Lights ] 695' may be omitted (208m) | 495" 466' (149m) (140m) 700' (210m) 250' 242' (73m) (75m)¡ (150m) 500' 233' (70m) Minor adjustments in vertical placement may be made to place Lights on same horizontal plane.

Lights on both structures to be synchronized.

17. f. (2) Fig. 6.

Page 52OCROpen in PDF

9/27/78 AC 70/7460-1F Appendix 1

- 200' (60m) or less All levels may be omitted 1/2 680' AGL 600' (204m) (180m) 250ª AGL (75m) 1/2 Lowest level should be above adiacent structure. Structures of equal height. Number of levels depend upon height of structure.

17. f. (1) Lights on both structures to be synchronized.

17. f. (2) 200' (60m) or less - 200' (60m) Top level- or less Display all units #695' Lower levels may (208m.)

be omitted 65Q° •466' (195m) 700' | (140m) 434' (210m) AGL (89m) 295°1 (130m)

•233' 300' (70m) AGL (90m) One structure higher than adjacent structure and light levels are on same horizontal plane, One structure higher than adjacent structure Lights on both structures to be synchronized. 17.f. (2) and light levels are not on same horizontal planes.

17. f. (2) Fig. 7.

Page 53OCROpen in PDF

AC 70/7460-1F 9/27/78 Appendix 1 paa - 20' (6m) or less b- More than 20' (6m) but less than 100' (30m) 800' AGL (240m) 300' AGL (90m)

17. e. (1) and (2) Fig, 8.

Page 54OCROpen in PDF

9/27/78 AC 70/7460-1F Appendix 1

HYPERBOLIC COOLING TOWER Fig. 9.

Page 55OCROpen in PDF

AC 70/7460-1F 9/27/78 Appendix 1 BRIDGE LIGHTING Fig. 10.