British Mk4B/4L Aircrew Flying Helmet
As per the Mk4A, but fitted with "Lo-Pro" visor mechanism, engineered to retract further back than usual to allow for fitting of NVGs. This would not provide any wind-blast eye protection while NVGs are in use.
Power was supplied to the NVGs by a battery pack attached to the helmet rear using Velcro.
Standard NATO plug pigtail fitted.
Service Images
Sea King SAR - Prince William
From The Daily Mail, Prince William uses a Mk4A4 helmet, with boom microphone in a Sea King SAR helicopter.
Mk4B/4L with NVGs in use at night
From Defence Imagery this image below shows a Mk4B/4L helmet fitted with a pair of NVGs in use in a Puma helicopter at night during operation Askari Thunder over Northern Kenya in 2011.
From Defence Imagery this image below shows a Mk4B/4L helmet fitted with a pair of NVGs in use in a Chinook helicopter at night in 2013 during repairs on the East Coast (UK) flood defences.
