TSO Cheat Sheet 2026

The 30 highest-yield TSO facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. ETD screening may be used as an alternative screening method to which technology? → Advanced Imaging Technology (AIT)
2. Which of the following objects would appear MOST penetrable (darkest) on an X-ray image? → A foam pillow
3. A TSO observes an object on the X-ray screen that appears green. This color typically indicates: → A mixture of organic and inorganic materials.
4. Which behavioral indicator might suggest a passenger is attempting to smuggle prohibited items through the checkpoint? → Avoiding eye contact, appearing excessively nervous, and repeatedly checking surroundings
5. A passenger claims that a white powder in an unlabeled bag is protein supplement. What should the TSO do? → Apply additional screening such as ETD swabbing and escalate if results are inconclusive
6. What is the maximum number of lithium-ion spare batteries between 100Wh and 160Wh a passenger may carry in carry-on baggage? → Up to 2 batteries with airline approval
7. Which of the following disqualifies an applicant from TSO employment under felony conviction rules? → Any felony conviction regardless of when it occurred
8. How should TSOs handle a security threat or emergency situation? → Immediately report it to law enforcement and follow emergency protocols
9. Which of the following items is permitted in checked baggage but NOT in carry-on baggage? → A black powder firearm with up to 1 pound of black powder
10. What is required from a TSO candidate to successfully pass the TSA screening process? → Successful drug screening
11. The 'Threat Image Projection' (TIP) system used during TSO accreditation and ongoing certification primarily serves to: → Insert simulated threat images into X-ray streams to test and maintain TSO alertness
12. During X-ray screening, a TSO notices an organic mass blocking the view of other bag contents. What should be the next step? → Rotate the X-ray image and request a bag search if the view remains obscured
13. When communicating with a passenger who has identified themselves as deaf or hard of hearing, which action is most critical for the TSO to perform? → Face the passenger directly, maintain eye contact, and use visual cues or written notes.
14. Which document formally authorizes a TSO to perform screening duties at a specific checkpoint? → A checkpoint certification issued after completing all required training
15. Which TSA physical ability test component specifically evaluates whether a TSO can lift and move baggage in a realistic work scenario? → Physical Abilities Test (PAT) — object lifting/carrying task
16. A TSO who is decertified for failing to meet proficiency standards may be eligible for reinstatement if they: → Complete additional remedial training and pass the required proficiency evaluation
17. Which TSA initiative encourages officers to continually develop professional skills beyond the minimum required training? → TSA professional development and career progression programs
18. A supervisor asks a TSO to pass a bag through screening without full inspection due to long lines. The TSO should: → Refuse and follow standard screening procedures
19. A passenger's carry-on bag contains a snow globe larger than a tennis ball. How should a TSO handle this? → Prohibit it from carry-on because the liquid volume cannot be verified as 3.4 oz or less
20. A passenger's X-ray image shows a cylindrical object with wires attached inside a laptop bag. What is the FIRST step a TSO should take? → Call for a supervisor and treat it as a possible IED until cleared
21. Which of the following statements is an example of inappropriate communication from a TSO to a passenger at the checkpoint? → "That's an interesting tattoo. Where did you get it done?"
22. A traveler has a checked bag containing an unloaded firearm and loose ammunition stored separately. Is this compliant with TSA rules? → No, ammunition must be in the original factory box or equivalent approved container
23. A passenger approaches you speaking loudly and using aggressive body language. What is the BEST first response? → Remain calm, speak in a low steady tone, and acknowledge their concern
24. TSA's English language proficiency requirement for TSO candidates exists primarily because: → TSOs must communicate clearly with passengers, colleagues, and law enforcement in English
25. A TSO discovers an unattended bag in the sterile area. What is the correct initial response? → Do not touch it and notify a supervisor and follow protocol
26. Which federal regulation governs the drug and alcohol testing program that TSA TSOs are subject to throughout their employment? → 49 CFR Part 40
27. A TSO is working a checkpoint when they recognize a well-known celebrity in the screening line. How should the TSO proceed? → Apply the same screening procedures as for any other passenger
28. A passenger's bag shows a tightly packed rectangular block that appears uniformly orange with no visible gaps. What concern might this raise? → The dense uniform block could be concealing items or indicate an IED component
29. A TSO is completing an incident report and is unsure about one detail. What is the best course of action? → Note that the detail is uncertain and consult available information or witnesses
30. How should a TSO respond if they discover a prohibited item in a passenger's bag during screening? → Notify a supervisor, prevent the passenger from leaving, and follow standard protocols