Side-by-side
Precision Approach Path Indicator (PAPI / APAPI) (Signalight-made) vs NARVA Conventional Incandescent Airfield Lamp — Prefocus P28s (7669 / 7654 / 7668C / 7670C / 6936C)
Spec comparison for two products on Aviation Souk. Both compete in Runway Lighting & Airfield Electrical.

Runway Lighting & Airfield Electrical
Precision Approach Path Indicator (PAPI / APAPI) (Signalight-made)
by Signalight (Electromax SRL)
ICAO Annex 14-compliant PAPI and APAPI visual glideslope indicators with integrated electronic clinometer, factory-calibrated for precise half-degree angular precision.

Runway Lighting & Airfield Electrical
NARVA Conventional Incandescent Airfield Lamp — Prefocus P28s (7669 / 7654 / 7668C / 7670C / 6936C)
by Vosla Gmbh Narva
P28s prefocus incandescent airfield lamp for constant-current regulated series circuits.
| Cost of ownership | Precision Approach Path Indicator (PAPI / APAPI) (Signalight-made) | NARVA Conventional Incandescent Airfield Lamp — Prefocus P28s (7669 / 7654 / 7668C / 7670C / 6936C) |
|---|---|---|
| Price tier | — | — |
| Lead time (weeks) | ?–? | ?–? |
| Delivery | — | — |
| Install | — | — |
| GCC airports deployed | 0 | 0 |
| Certifications | 0 | 0 |
Specs
Technical specifications.
| Spec | Precision Approach Path Indicator (PAPI / APAPI) (Signalight-made) | NARVA Conventional Incandescent Airfield Lamp — Prefocus P28s (7669 / 7654 / 7668C / 7670C / 6936C) |
|---|---|---|
| Configuration | PAPI (4-unit) and APAPI (2-unit) | — |
| Power consumption | 50 W max per unit | — |
| Power supply — PAPI | 2.8–6.6 A CCR input | — |
| Power supply — APAPI | 110/230 V AC mains | — |
| Angular fault detection | 0.5 ° deviation threshold | — |
| Housing | Powder-coated aluminium RAL 1004, hardened glass diffuser | — |
| LED source | OSRAM red + white with custom optics | — |
| Standard | ICAO Annex 14 Vol. 1, 7th Edition 2016, Fig. A2-23 + §5.3.5.30 | — |
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