The CH-47 flight engineer: role, training and manuals

A CH-47 flight engineer is the crewmember who flies in the Chinook's cabin and works with the two pilots. The Army's 2014 CH-47 fact sheet lists the minimum crew as three: pilot, copilot and flight engineer. In Army aviation training doctrine, the flight engineer is a non-rated crewmember (NRCM), and TC 3-04.11, dated April 14, 2022, sets the training program the job runs under. The aircraft-specific aircrew training manual (ATM) is harder to pin down: the last CH-47 ATM in the Army's public publication index is dated 2013 and marked inactive.

Who flies as flight engineer

TC 3-04.11 defines NRCMs as individuals other than rated crewmembers who perform duties aboard an aircraft that are essential to operating the aircraft or its mission equipment in flight. The list names crew chiefs, flight medics, flight engineers, flight instructors, standardization instructors, door gunners and cabin attendants. NRCMs must meet monthly flying-hour requirements under AR 600-106.

The circular sets three conditions for a flight engineer. The Soldier must be qualified in the military occupational specialty (MOS). The commander must select the Soldier for the flight duties and place the Soldier on flight status under AR 600-106. The Soldier must then complete the qualification requirements in the circular, the master task list (MTL) and the approved program of instruction or ATM. NRCM qualification training is conducted at the unit.

A crew roster from a September 2020 California National Guard rescue shows the arrangement. The CH-47F was flown by a pilot-in-command and a pilot, with two flight engineers in the back. One of them, Sgt. George Esquivel, is described as a CH-47F Chinook mechanic and flight engineer.

Duties in flight and on the ground

Army stories describe the cabin work in the crew's own words. A 2011 story from Camp Taji, Iraq calls flight engineers the eyes in the rear of the aircraft, the muscle that handles cargo, and the crew members who ensure the safety of strapped-in passengers. A company commander and Chinook pilot said pilots cannot see behind them, so flight engineers provide aircraft clearance, load passengers and cargo, and are in charge of how the aircraft is loaded. Another pilot said the flight engineers have instruments in the back that the pilots cannot see.

An April 2026 Alaska Army National Guard story adds the load math. For a lift of more than 5,500 pounds of cargo to Denali Base Camp at 7,200 feet, Sgt. 1st Class Jeremy Maddox was responsible for every piece of gear loaded, and weight, balance and sequencing had to be exact before takeoff. In flight, the flight engineer monitored systems and coordinated with the pilots.

The 2020 rescue story shows the passenger side: Esquivel said the first lift carried 65 people in an aircraft the story says is designed for about 30. Ground work is part of the job too. A Chinook standards instructor quoted in a 2016 story said the job is not just flying but planning and maintenance.

The aircrew training program

TC 3-04.11 calls the ATM the primary publication used to train aircrews to established standards, with individual tasks scored Go or No Go. The ATM's chapters include crewmember tasks, maintenance tasks, instructor tasks and aircrew coordination training.

Crewmembers progress through readiness levels (RL). RL3 covers qualification, refresher and deficiency training, and an RL3 crewmember flies only with an instructor or evaluator, such as a flight instructor or standardization instructor. Demonstrated proficiency in the base tasks moves a crewmember to RL2, which trains the tactical and mission tasks the commander selects. RL1 crewmembers keep current through semi-annual and annual task iterations, flying-hour minimums, an annual standardization flight evaluation, an annual written examination and an annual aircrew coordination training module. The circular treats the CH-47D and CH-47F as similar aircraft for task and evaluation requirements.

The 2016 story, from a Chinook unit at Buckley Air Force Base, Colorado, describes the path in practice. Soldiers start in maintenance with no flying, move to the flight company as crew chiefs, and are evaluated until signed off as flight engineers, which normally takes around two years. Some later become flight instructors. A standards instructor described starting as a readiness-level 3 crew chief who flew with a flight instructor.

The manual and the checklist

The Army Publishing Directorate's publication search shows the CH-47 ATM's lineage. A title search for "aircrew training manual" returns 37 records, every one inactive. The cargo helicopter entries are TC 1-139 (October 10, 1980), TC 1-216 (October 8, 1992), TC 1-240 for the CH-47D (October 24, 2007) and TC 3-04.34 for the CH-47D/F (April 5, 2013). The public index lists no active CH-47 ATM. TC 3-04.11 notes that it is also published on the Central Army Registry, a separate Army site.

The crew checklist is current in the index. TM 1-1520-271-CL-1, the Operator's and Crewmember's Checklist for the CH-47F, is dated December 31, 2025 and supersedes the May 31, 2024 edition. The entry says the manual is not complete without TM 1-1520-271-CL-2, the flight reference cards, which the index dates May 31, 2024. The file sits on an Army login portal.

What to check

• Does a document cite an ATM by number and date, and is that edition still active? The last public CH-47 listing, TC 3-04.34 of April 5, 2013, is inactive.
• Does a training claim follow TC 3-04.11, dated April 14, 2022, or an earlier edition such as the one dated September 21, 2018?
• Does a description of the crew match the fact sheet's minimum of pilot, copilot and flight engineer?
• Does a checklist reference give TM 1-1520-271-CL-1 dated December 31, 2025, together with its required CL-2?
• Does a statement about progression separate RL3, RL2 and RL1 requirements as the circular does?

Azcuna's ELLMENT for the CH-47 puts the Chinook's public technical manuals, the Army sling-load manuals and a unit's own SOPs on a laptop or tablet that answers a repairer's or flight engineer's question with no network and cites the manual and page. Azcuna submitted it as a concept white paper to the Army's xTech|Search 10 competition in October 2026.

Sources

1. 1CH-47 CHINOOK HELICOPTER · U.S. Army, army.mil (November 4, 2014)
2. 2TC 3-04.11, Commander's Aviation Training and Standardization Program · Headquarters, Department of the Army (April 14, 2022)
3. 340th CAB rescues nearly 400 stranded by Creek Fire · California National Guard, via DVIDS (September 29, 2020)
4. 4Chinook flight engineers fly 'All Night Long' · 40th Combat Aviation Brigade, via DVIDS (October 24, 2011)
5. 5Alaska Army National Guard CH-47 crews support Denali Base Camp establishment · Alaska National Guard, via DVIDS (April 23, 2026)
6. 6Chinook Soldiers: teaching through the ranks · 460th Space Wing, via DVIDS (April 14, 2016)
7. 7Publication search (Active, Inactive and Rescinded) · Army Publishing Directorate
8. 8TM 1-1520-271-CL-1 (publication details) · Army Publishing Directorate

Where this shows up in our work

• ELLMENT for the CH-47 Chinook answers a repairer's or flight engineer's question from the Chinook's manuals and the Army sling-load manuals and cites the page, with no network.
• TRACE, the offline S1000D and IETM viewer opens S1000D, MIL-STD-3001 and PDF technical manuals on a tablet with every marking intact.