10 exam-style questions with answers and explanations, straight from our 1,030-question bank. Tap an answer to check yourself. When you're ready, take the scored version in the free practice test.
These 10 free SSA questions are organized by exam domain, so you can see how each part of the Structural Sheetmetal Assembly blueprint is tested. Reveal the answer and explanation under each question.
Just before a flight-control bay is closed, a technician notices that the drill bit returned to the tool tray has a broken tip. Every tool position is filled, but the fragment has not been recovered. What takes priority?
Correct answer: C - Keep the bay open and initiate the missing-fragment FOD procedure.
A drawing specifies 2024-T3 aluminum sheet. Available stock is marked 2024-O and has the correct thickness. What distinction in these markings prevents the two sheets from being treated as equivalent?
Correct answer: D - The processing condition and resulting mechanical properties.
A 0.125-in-diameter hole is located 0.400 in from a sheet edge, measured to the hole center. The drawing calls for a 0.060-in strip to be removed from that edge at net trim. The minimum permitted edge distance is 0.300 in. Which inspection entry will be correct after trimming?
Correct answer: C - 0.3400 in; the hole meets the edge-distance requirement.
Inspection finds that every hole in a straight row is displaced by the same 0.020 in away from datum A. Center-to-center pitch and row straightness both conform to the drawing. Which layout error best fits that pattern?
Correct answer: A - The starting reference was offset from the specified datum.
Two aluminum sheets lie flat when separated. After match-drilling, separating, and restacking them without fasteners, they rock slightly against each other. Small gaps are concentrated around several hole exits, although the hole centers remain aligned. Which condition best explains these findings?
Correct answer: B - Exit burrs remain on the sheets’ mating faces.
A test coupon was countersunk with an 82-degree cutter for a specified 100-degree flush rivet. The rivet head does not bear uniformly on the seat. Which adjustment addresses the cause rather than merely changing the visible head height?
Correct answer: D - Fit a 100-degree cutter and establish depth on a fresh matching coupon.
A universal-head solid rivet will join two 0.050-in sheets and a permanent 0.025-in shim. A 0.125-in backing plate used during drilling will be removed before riveting. For the specified 0.125-in-diameter rivet, the installation instruction requires a shank length equal to the permanent grip plus 1.5 shank diameters. Which under-head length should be selected?
Correct answer: B - 0.3125 in (5/16 in)
A two-lug nutplate has the correct attachment-rivet spacing, but its threaded axis is offset from the panel's correctly located screw-clearance hole. For the next part, which drilling-jig setup directly prevents this error?
Correct answer: C - Index the jig from the existing screw-clearance hole.
During removal of a defective solid rivet, a centered drill has reached the junction of the manufactured head and shank without cutting the surrounding sheet. In a head-first removal procedure, what should happen before the shank is driven out?
Correct answer: A - Break off the weakened manufactured head while supporting the work.
A reamed Hi-Lok hole is checked with the specified, verified GO/NO-GO plug gauge. Both ends pass completely through the clean hole using light hand pressure. Under the inspection procedure, the GO end must pass and the NO-GO end must not enter. How should this result be interpreted?
Correct answer: B - The hole exceeds the specified upper size limit.
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