July 10, 2026
No one knows everything, and aviation systems constantly evolve. A lack of knowledge becomes hazardous when individuals assume instead of asking questions or verifying information. Relying on outdated information, guessing at procedures, or skipping manual references can lead to serious errors. Regulations require training, maintaining currency, and using of approved data to protect everyone involved. Admitting you don’t know is a strength, not a weakness. Failing to seek the correct information can cost you your certification, your job, and potentially lives—including those of coworkers, passengers, and family members who trust the aviation system.
A lack of system knowledge has been a recurring factor in aviation mishaps. In American Airlines Flight 587, misunderstandings about aircraft behavior and control inputs contributed to structural failure. In maintenance, not fully understanding systems or relying on assumptions instead of manuals can be just as dangerous. Regulations require training, currency, and use of approved data to prevent this. Guessing instead of knowing can cost you your certificate—and someone else their life.
There are many different examples of ‘Lack of Knowledge” in our industry for example, Alaska Airlines Flight 1282 (737 MAX 9 door plug blowout). Door and door stops not rigged properly or United Airlines Flight 267 (A320) cross connection of wheel speed tachometer wires due to inadequate maintenance.
If you’re unsure—stop and ask. Regulations require approved data for a reason. Guessing can cost your certificate and someone else their life.
What it looks like:
Assuming instead of verifying.
Aircraft systems change, and memory fades. Using assumptions instead of manuals leads to incorrect installations.
AMT Focus:
If you’re not 100% sure, stop and look it up. Guessing can cost your A&P and someone’s life.
