U.S. Department 

of Transportation 

Federal Aviation 

Administration

Subject: Date: SPECIFICATION FOR L-884, 6/29/01 AC No.: 150/5345-54A 

POWER AND CONTROL UNIT 

FOR LAND AND HOLD SHORT 

LIGHTING SYSTEMS 

Initiated by: AAS-200 Change: 1 

1. PURPOSE. This change is to provide a correction to paragraph 3.3.1.4, Painting and Finishing, in the subject 

advisory circular (AC). 

2. CANCELLATION. Paragraph 3.3.1.4, Painting and Finishing, of AC 150/5345-54A, Specification for L-884 Power 

and Control Unit for Land and Hold Short Lighting Systems, dated August 7, 2000, is replaced. 

3. BACKGROUND. This change allows for the certification of equipment that meets this specification by eliminating the 

stated requirement for oil proof and weatherproof paint due to non-availability. 

4. APPLICATION. The change is immediate and provides a replacement for page 3 of the subject AC. 

DAVID L. BENNETT 

Director, Office of Airport Safety 

 and Standards 

6/29/01 AC 150/5345-54A CHG 1 

3

c. Altitude. Any altitude from zero to 6,600 feet (2000 m). 

3.2.2 Style II, Outdoor PCU. Equipment intended for outdoor installation shall be designed to operate properly under the 

following conditions: 

a. Temperature. Any ambient temperature from -67F (-55C) to 158F (70C). 

 b. Humidity. Any relative humidity from 0% to 100% at an ambient temperature of 158F (70C). 

c. Altitude. Any altitude from zero to 6,600 feet (2000 m). 

d. Sand and Dust. Exposure to wind borne sand and dust particles. 

e. Windblown Rain. Exposure to windblown rain from any direction. 

 

f. Wind. Exposure to wind speeds up to 100 mph (161 km/hr) from any direction. 

 

g. Salt-Spray. Exposure to salt-laden atmosphere. 

h. Sunshine. Exposure to solar radiation. 

3.3 Design Requirements. 

3.3.1 Enclosures. All PCUs shall be housed in the appropriate NEMA style housing and shall provide suitable space for 

the installation of the communication interface(s) to provide the control requirement specified in paragraph 3.5 of this 

document. Each unit shall have a hinged access door with provisions for padlocking. 

3.3.1.1 Style I, Indoor PCU. Style I, PCUs shall be housed in a stainless steel or aluminum NEMA Style 1 enclosure. 

3.3.1.2 Style II, Outdoor PCU. Style II, PCUs shall be housed in a stainless steel or aluminum NEMA Style 4 or 4X 

enclosure. The total weight of each style II, PCU shall not exceed 100 lbs (46 kg). When style II, PCUs are installed in 

accordance with the manufacturer’s instructions, the top of the unit shall not be higher than 42 inches (1070 mm) above the 

ground. PCU’s designed for installation inside the runway and taxiway safety areas shall: not be higher than 30 inches 

above the ground, not exceed 75 lbs, and be installed with frangible couplings which conform to FAA drawing C-6046. 

(Runway Safety Areas (RSA) and Taxiway Safety Areas (TSA) are defined in AC 150/5300-13, Airport Design Standards.) 

The frangible coupling and mounting flanges shall be designed for use with 2-inch (51 mm) electrical metallic tubing 

(EMT) and shall be suitable for mounting on a concrete pad. The point of frangibility shall be located no higher than 

3 inches above grade when installed. 

3.3.1.3 Size. Each unit with enclosure shall comply with the following maximum dimensions: width 24 inches (610 mm), 

height 36 inches (915 mm), and depth 9 inches (228 mm). 

3.3.1.4 Painting and Finishing. The inside and outside of the PCU enclosure shall be protected by at least one prime coat 

(or other suitable preparatory painting process) and one finish coat. Paint for the finish coat shall be high-quality paint 

suitable for the drying process used. Paint for the prime coat shall be suitable for the metal treatment involved. The color 

of the outside finish coat for all PCUs shall be color No. 12197, Federal Standard 595. The outside painted surface of the 

enclosure shall be free of scratches, blemishes, and chipping. 

3.3.2 Control Cabinet. The control circuits, relays, sensing devices, control terminal block, remote/local control switch or 

keypad, and other low voltage control components shall be protected from the elements of the specified environment. This 

protection may be provided by the main enclosure or an additional cabinet/compartment installed inside the PCU. All low 

voltage control components shall be accessible by opening the housing (main enclosure, cabinet/compartment) in which 

they are installed.