This mission is divided into three chapters containing a total of eleven collectible pilot helmets.
chapter 1 contains 2 Helmets. If you miss collecting them, then they can be again collected during chapter 3.
chapter 2 contains 2 Helmets
chapter 3 contains 7 Helmets
Timestamp for Pilot Helmets has been highlighted in the timestamps below.
Chapter 1 & 2
01:39 – Eliminate all threats attacking the control room.
02:22 – Pilot Helmet 1 of 9 and 2 of 9 (Collectible)
04:15 – Enter the control room
05:21 – Chapter 2 Starts (Locate an Arc Tool)
08:06 – Pilot Helmet 1 of 2 (Collectible)
09:35 – Disable the turbine
10:50 – Retrieve the ark tool from the Marvin
11:16 – Pilot Helmet 2 of 2 (Collectible)
13:49 – Reaching back to the control room
Chapter 3
00:05– Chapter 3 Starts (Return to the beacon control room with the Ark tool)
00:36 – Activate all power relays with the Ark tool
02:15 – Locate a working uplink Targeting Module
03:18 – Get a working module from the dish
03:50 – Pilot Helmet 3 of 9 and 4 of 9 (Collectible)
05:23 – Fight with the wave of enemies
10:52 – Pilot Helmet 5 of 9 (Collectible)
14:02 – Pilot Helmet 6 of 9 (Collectible)
16:30 – Pilot Helmet 7 of 9 (Collectible)
19:15 – Take the working module from the dish
19:26 – Bring the module back to the first beacon
24:33 – Replace the module at the top of the dish (Second throw by BT)
25:02 – Pilot Helmet 8 of 9 (Collectible)
25:02 – Pilot Helmet 9 of 9 (Collectible)
31:00 – Boss Fight (Richter)
33:55 – Cutscene (Cooper becomes official Pilot for BT-7274)