My classic '72 EnerJet AeroDart launched w/ a 72-era EnerJet F52 motor. The epoxy bond on foward cap let go, and the rocket shredded. The motor blew out the bottom of the rocket and instantly stopped burning--it was nearly full of unburnt propellant. I was able to recover enough parts of the payload section to rebuild.
Rocketry Club: Diego Area Rocket Team