ZA181 High Intensity Runway Centerline and Touch Down Zone Inset Light | FAA Compliant: L-850A & B

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Compliance and Applications

FAA Compliant: L-850A, L-850B
AC 150/5345-46D
NATO Stanag 3316
ICAO Annex 14

Category I, II and III all weather operation airfield lighting systems.

Suitable for use as high intensity inset runway centerline and touch down zone lights.


• Lightweight and robust aluminum alloy construction.
• Prism removal and replacement achieved without need for adhesives or sealants.
• Pre-focused optics simplify maintenance.
• Pressure test plug ensures moisture-proof light cavity.
• Installation and maintenance manual AVD 104.

Application Variations

FAA# Application Config. Lamps Color Code
L-850A Centerline Bidirectional 2 White/White 80-ZA181iWW
L-850A Centerline Bidirectional 2 White/Red 80-ZA181iWR
L-850A Centerline Unidirectional 1 Red/Blank 80-ZA181iRX
L-850B Touch down zone Unidirectional 1 White/Blank 80-ZA181iWX

Ordering Codes

Fixture Color (LH) Color (RH) Plug Leads Lamps Bypass
80-ZA181i W: White
R: Red
X: Blank
W: White
R: Red
X: Blank
1: Single ‘B’ type
2: Two ‘B’ type
1: Single 45/49W
2: Two 45/49W
3: Single 105W
4: Two 105W
B: Lamp bypass
Blank: No bypass


• Low profile: 0.47″ (12mm) projection.
• Long life lamps: 1,500 hours at full intensity. Over 3,500 hours in normal use.
• 6.6A from 45W, 100W, or 200W isolating transformer. TDZ uses 1@45/49W lamp. RWCL uses 2@45/49W lamps.
• Corrosion resistant anodized finish. Stainless steel fasteners.
• Net weight 11 lb. (5kg). Gross weight 13.2 lb. (6kg). Carton size 8.7 in. x 8.7 in. x 5 in. (220mm x 220mm x 126mm).

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