![HGU-55/ P](https://static.wixstatic.com/media/74bdca_2dc04c5fd59c4f6897d6f5c59e1c2511~mv2_d_3000_4400_s_4_2.jpg/v1/fill/w_147,h_216,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/74bdca_2dc04c5fd59c4f6897d6f5c59e1c2511~mv2_d_3000_4400_s_4_2.jpg)
![HGU-55/ P REAR](https://static.wixstatic.com/media/74bdca_631b186e00b54a6aaa9b448b9dcfbb42~mv2_d_2993_4400_s_4_2.jpg/v1/fill/w_147,h_216,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/74bdca_631b186e00b54a6aaa9b448b9dcfbb42~mv2_d_2993_4400_s_4_2.jpg)
![HGU-55/ P LH](https://static.wixstatic.com/media/74bdca_3901ba1facbd46908d708f935624388e~mv2_d_3000_4400_s_4_2.jpg/v1/fill/w_147,h_216,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/74bdca_3901ba1facbd46908d708f935624388e~mv2_d_3000_4400_s_4_2.jpg)
![HGU-55/ P RH](https://static.wixstatic.com/media/74bdca_c089820f19c2429c988d77a848301ae0~mv2_d_3000_4400_s_4_2.jpg/v1/fill/w_147,h_216,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/74bdca_c089820f19c2429c988d77a848301ae0~mv2_d_3000_4400_s_4_2.jpg)
![HGU-55/ P FRONT](https://static.wixstatic.com/media/74bdca_8e6ab039d4874e8a95bfc467e78acf46~mv2_d_3000_4400_s_4_2.jpg/v1/fill/w_147,h_216,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/74bdca_8e6ab039d4874e8a95bfc467e78acf46~mv2_d_3000_4400_s_4_2.jpg)
![HGU-55/ P](https://static.wixstatic.com/media/74bdca_766b3f88b49e48a4b1ddff7d2e9240bc~mv2_d_1221_1721_s_2.jpg/v1/fill/w_147,h_207,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/74bdca_766b3f88b49e48a4b1ddff7d2e9240bc~mv2_d_1221_1721_s_2.jpg)
Current configuration, double bungee visors, HA-LP/PPB oxygen mask.
HGU-55/P
Except for the supplemental boom mike bracket, the initial configuration of the HGU-55 during its introduction in the mid-end of the 1980's represented standard issue.
The HGU-55 replaced the Gueneau 316 and the Protection, Inc. DH-151.
There was not a real evaluation, the HGU-55 deemed the best option regarding system compatibility with the just introduced Northrop F-5E Tiger II.
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During the evaluation for a "Lightweight" helmet to be provided to jet pilots held in the late 1980s, the HGU-55 was considered as a benchmark against the tested helmets, the prototype S-00x, TITLIS TFC, ZEUS C, and the H-ATS. None of the above helmets had any substantial advantages over the HGU-55, which remained and is still in service today.
The installation of double visors and related oversize visor stops took place at a later stage.