As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
KEY CAN BE REMOVED FROM DOOR LOCK WHEN LOCK IS IN OPEN POSITION REGARDLESS OF DOOR LATCH POSTION. FAILS TESTS PER AD 88-04-05. SUBMITTER STATED THE AD SHOULD BE A 100-HOUR RECURRING MAINTENANCE REQUIREMENT. MOST PILOTS UNAWARE OF NEED FOR PRE/POST-FLIGHT CHECKS PER PAPER SB 633B.