{"as_of":"2026-11-03","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Applies to","items":[{"count":37,"name":"Boeing 727","note":"","unit":"registered","url":"https://eflight.com/models/boeing/727#airworthiness"}],"relation":"applies to"},{"group":"System","items":[{"count":null,"name":"Electrical power","note":"","unit":"","url":"https://eflight.com/systems/electrical"}],"relation":"about"},{"group":"Related orders","items":[{"count":null,"name":"Replaced by 2007-11-08","note":"","unit":"","url":"https://eflight.com/directives/2007-11-08"}],"relation":"related to"},{"group":"More","items":[{"count":null,"name":"Every FAA order","note":"","unit":"","url":"https://eflight.com/directives"},{"count":null,"name":"Every aircraft system","note":"","unit":"","url":"https://eflight.com/systems"}],"relation":"see also"}],"graph":"https://eflight.com/graph","graph_index":"https://eflight.com/graph/index.json","license":"https://creativecommons.org/licenses/by/4.0/","node":{"effective":"1999-06-28","faa_document":"https://drs.faa.gov/browse/excelExternalWindow/8D39E64A85DF997D8625698300724AF5.0001","id":"99-12-52","kind":"AD","name":"Airworthiness directive 99-12-52","published":"1999-06-23","subject":"Fuel Boost Pump","system":"electrical","type":"directive","url":"https://eflight.com/directives/99-12-52"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}