Sooner or later, the rocketeer who started with a C6-5 wants to see what an H motor does. Past a certain size, though, a rocket stops being a model rocket in the eyes of the law and the motor makers. To buy and fly H and I motors you need a Level 1 high-power certification from one of the two national groups that offer it: the National Association of Rocketry (NAR) or the Tripoli Rocketry Association (TRA).
This guide walks through what Level 1 lets you do, who can get it, how the certification flight works with each group, and what makes a flight fail. Rules here are as the NAR and Tripoli websites state them in October 2026; your certifying club will have the final say on the day.
The Short Answer
Level 1 lets an adult NAR or Tripoli member buy and fly H and I motors. You earn it by building a rocket yourself and flying it once on a certified H or I motor in front of a qualified witness, with a clean flight and a safe parachute recovery.
- You must be 18 or older and a member of the group you certify with.
- H motors are up to 320 N-s of total impulse; I motors are 320.01 to 640 N-s.
- The rocket is inspected before and after the flight, and you'll answer safety questions.
- Tripoli fails a flight for a motor failure, a failed deployment, parts coming down loose, or landing faster than 35 feet per second.
- Fly it at a club launch, where the field size and FAA waiver are already handled.
1. What Level 1 Lets You Fly
The NAR's certification page puts it plainly: Level 1 allows the purchase and use of H and I impulse class motors, solid and hybrid. Level 2 opens J, K and L motors, and Level 3 opens M, N and O, each with its own tests on top of the level below.
Where H and I sit on the scale
The NAR's High Power Rocket Safety Code groups motors by installed total impulse: up to 320 N-s is H or smaller, and 320.01 to 640 N-s is an I. For comparison, the Estes F15-6 you might fly in a big model rocket has a total impulse of 49.61 N-s. An H can carry several times that.
Some F and G motors need it too
It isn't only about the letter. The NAR says some F and G motors also require Level 1, including hybrids, spark-emitting motors, and motors with more than 80 N of average thrust. Check the motor's listing before you buy.
Buying motors without a card
The NAR's laws and regulations page says high-power motors may be sold to, or possessed by, only a certified user, that certification comes from a nationally recognized group (currently the NAR and Tripoli), and that certified users must be 18 or older. It also notes that hobby rocket motors, high power included, no longer need a federal explosives permit to buy, store or fly, though certain igniters and bulk black powder still do.
2. How the Certification Flight Works
Both groups follow the same idea: you build a sound rocket, show it's safe, fly it once on an H or I, and bring it back in flyable shape. The details differ slightly, so certify under the rules of the group you belong to.
NAR Level 1
The NAR's Level 1 overview requires you to be at least 18, an NAR member in good standing, and to use certified rocket motors, with at least one H or I class motor. You build and fly the rocket yourself. A qualified, unrelated certification team evaluates you, and the flight must be witnessed in person. The process runs in four steps: a pre-flight inspection, technical questions, the witnessed flight, and a post-flight inspection. You fill out paper and digital forms, and after the NAR confirms the result you get a temporary certification card, then an updated membership card.
Tripoli Level 1
Tripoli's Level 1 page calls for members 18 and older and a single certified H or I motor with a total impulse between 160.01 and 640 N-s. A Prefect, Tripoli director or TAP member must be present and watch enough of the flight to see a stable ascent and a controlled descent. The rocket must be built by the flyer, from a kit or from scratch, and be a conventional design. Parachute recovery is required, staged and clustered rockets aren't allowed, and electronics are optional.
What fails a flight
Tripoli lists the failures: a motor CATO (catastrophic failure), excessive damage during flight or recovery, a failed recovery deployment, exceeding the waivered or expected altitude or drifting off the range, parts coming down that aren't attached to the recovery system, landing faster than 35 feet per second, and any other safety code violation on that flight. The NAR's inspection looks for the same things: proper construction, stability, recovery deployment and a safe recovery. A failed flight just means you fix the rocket and try again.
Under 18?
The NAR runs a Junior HPR Participation Program for Junior and Young members aged 14 to 17 that allows H and I motors, with extra requirements because of the legal limits on minors handling high-power motors. Ask your section about it.
3. Getting Ready for Your Level 1
The inspection and the flight test basics more than the motor. Build up to it with big model rockets, then pick a simple, sturdy design and fly it where the field and the paperwork are already sorted.
Fly big model rockets first
A rocket like the Estes Pro Series II Super Big Bertha is a good bridge. It's 36.8 inches long and 2.6 inches in diameter, weighs 8.9 oz, flies on 29 mm E16-4 and F15-6 motors, and comes down on a 24-inch parachute from up to about 1,200 feet. Building and flying something that size teaches you strong fin joints, motor retention, shock cord mounting and chute packing, which are exactly what an L1 inspector checks.
Know the high-power safety code
The NAR High Power Rocket Safety Code sets the rules you'll be asked about. A few to know cold: don't launch in winds over 20 mph; point the launcher within 20 degrees of vertical and use a longer one when the wind is over 5 mph; keep liftoff weight to no more than one-third of the motor's average thrust; and use flame-resistant or fireproof recovery wadding. For H and I motors the code calls for a 50-foot cleared area around the pad and a minimum personnel distance of 100 feet (200 feet for multi-stage or multi-motor rockets).
Fly at a club launch
High-power rockets need space and airspace. The safety code puts the launcher at least 1,500 feet from occupied buildings and public highways, on a site whose smallest side is at least 1,500 feet or half the maximum allowed altitude, whichever is greater. The NAR's laws page adds that these Class 2 rockets can't fly in controlled airspace without an FAA Certificate of Waiver, which takes 45 to 60 days or more to request, and that fliers must activate a NOTAM at least 24 hours before launch. Clubs already have fields, waivers and certification teams, so plan your L1 at a club launch. Our Georgia clubs guide lists where to start.
A Level 1 day checklist
- Join the NAR or Tripoli and bring your membership card.
- Tell the club ahead of time you plan to certify, and ask who will witness.
- Simulate the flight and bring the printout; know your expected altitude and the motor you'll use.
- Bring the rocket for inspection unloaded, with the motor and its retainer, chute, shock cord and protector or wadding.
- Prep the motor under the eye of an experienced flier the first time, and follow the motor's instructions exactly.
- After landing, leave the rocket as it came down until your witness has inspected it.
Conclusion
Level 1 is the doorway to high-power rocketry: be 18 or older, join the NAR or Tripoli, build a solid rocket yourself, and fly it once on a certified H or I motor with a clean boost and a safe parachute landing in front of a qualified witness. Get there by flying big model rockets first and learning the high-power safety code, and plan the flight at a club launch.
Want help picking a stepping-stone kit or talking through your build? Stop by our Cumming showroom, or contact the shop.
Gear Mentioned in This Guide
Estes Super Big Bertha Model Rocket Kit, Pro Series II (EST9719)
A 36-inch, 29 mm rocket for E16 and F15 motors: the build skills and field habits you'll need for Level 1, on a model rocket.
Shop now
Estes 30" Nylon Rocket Parachute, Pro Series II (EST2273)
A reusable nylon chute for bigger, heavier mid-size rockets. Size it to your rocket's weight before you fly.
Shop now
Estes Alti Trak (EST2232)
A handheld altitude tracker so you can compare real flights against your simulation.
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Estes Pro Series II Recovery Wadding for Model Rockets (39 sheets) (EST3556)
Larger flame-resistant wadding sheets for wide-body rockets like the Super Big Bertha.
Shop nowFrequently Asked Questions
How old do you have to be for a Level 1 rocket certification?
Both the NAR and Tripoli require you to be 18 or older. The NAR's Junior HPR Participation Program lets members aged 14 to 17 fly H and I motors with extra requirements.
What motor do I need for a Level 1 flight?
A certified H or I motor. Tripoli specifies a single motor with total impulse between 160.01 and 640 N-s; the NAR requires at least one H or I class motor.
Can I use a kit for my Level 1 rocket?
Yes. Both groups require that you build it yourself, but Tripoli says it can be a kit or scratch-built, as long as it's a conventional design with parachute recovery.
What makes a Level 1 flight fail?
Tripoli lists a motor CATO, excessive damage, a failed recovery deployment, parts coming down unattached, exceeding the altitude limit or drifting off the range, and landing faster than 35 feet per second.
Do I need an explosives permit to fly high-power motors?
The NAR says hobby rocket motors, including high power, no longer need a federal explosives permit to buy, store or fly. You do need a certification at the right level, and some igniters and bulk black powder still require permits.
