The FAA knowledge test review process, colloquially called the "ground review," is a regulatory requirement embedded in Part 61 that applies to virtually every pilot certificate and rating applicant who does not achieve a perfect score on the Airman Knowledge Test. When an applicant receives their test results, the report does not show which specific questions were missed — instead, it returns a set of Learning Statement Codes (LSCs), each corresponding to a broad subject area where deficiencies were identified. The applicant in this Reddit post is approaching the process correctly by using the Sporty's app to decode those LSCs before meeting with the CFI, which is the foundational first step toward a productive review session.
The purpose of the CFI-conducted review is not merely administrative. Under 14 CFR §61.39, an instructor must certify that they have reviewed any knowledge test areas in which the applicant was deficient, and that the applicant is competent in those areas before the practical test endorsement can be issued. This means preparation matters in both directions: the applicant who shows up already familiar with the subject areas flagged by the LSCs will have a more substantive conversation and a stronger endorsement. Cross-referencing the LSC descriptions against the applicable FAA Airman Certification Standards (ACS) or Practical Test Standards, then pulling the referenced regulatory sections, FAA handbooks, or advisory circulars, is the most direct way to build that competency before walking in.
For working professional pilots — whether operating under Part 121, 135, or Part 91/91K in business aviation — the LSC-based review process remains directly relevant any time a new rating, certificate, or type rating knowledge test is involved. ATP candidates, pilots adding instrument or multiengine ratings, and those pursuing type ratings all go through the same deficiency code review with an authorized instructor or check airman before the checkride. The process also reinforces a broader professional discipline: knowing not just the right answer but the regulatory basis and operational reasoning behind it, which is precisely what evaluators probe during oral examinations regardless of certificate level.
The broader trend this reflects is an increased emphasis on knowledge-test integrity and substantive pre-checkride preparation in the wake of ongoing FAA scrutiny of training quality in both Part 61 and Part 141 programs. The LSC system replaced the older approach of simply listing question numbers, deliberately forcing applicants and instructors to engage with subject matter rather than answer keys. Aviation training developers, simulator vendors, and ground school platforms — including Sporty's, Gleim, and King Schools — have built LSC lookup and study tools precisely because the industry recognizes that targeted, code-driven review produces better-prepared pilots. For any pilot at any stage of certification, the discipline of identifying a deficiency, tracing it to its source material, and being able to explain it to an instructor or examiner is a foundational professional habit that extends well beyond the written test room.