| Term |
Definition |
| APU: Terms and Definitions |
APU: Reliability Terms and Definitions. |
| Engines: Terms and Definitions |
Engines: Terms and Definitions for "ALF502" and "LF507" |
| Engines: Terms and Definitions |
Engines: Terms and Definitions for "TFE", "ATF" and "TPE") |
| AC Door Number | An identifying number typically used by airlines to label their individual planes in their fleets. Usually appears on the door or belly of an aircraft. |
| AC Tail Number | An identifying number assigned by the governing aviation body for a particular country for individaul aircrafts. Usually appears on or near the tail of an aircraft. |
| APU | Auxilary Power Unit |
| ATA | Air Transport Association |
| ATA Spec-2000 | Chapter 11 - A Standard for Reliability Data Collection and Exchange |
| CORDAS | Component Reliability Data Collection Standards (Now ATA Spec 2000, Chapter 11) |
| CR | Confirmed Removal Rate Per 1000 Flight Hours, or Confirmed Return Code |
| CRDC | Component Reliability Data Collection/Exchange |
| CSDD | ATA Component Standard Data Dictionary |
| DFR | Design for Reliability |
| DFSS | Design for Six Sigma |
| Data In | A Tool for Inputing/Cleaning/Exporting Shop Data Records from Multiple Sources |
| Dynamic Reports | Reports that are generated by user inquery on the HAvRel website. Reports return live data from the database based on constraints entered by the user. |
| EAR | U.S. Department of Commerce Export Administration Regulations (EAR), Regarding Export Controlled Data that may not be exported outside of the United States. |
| EC Data | Export Controlled Data - technical data that is controlled (ITAR or EAR), that may not be exported outside of the United States. |
| FRACAS | Failure Reporting and Corrective Action System |
| Fleet Configuration | Fleet quantities and installation percentages for each LRU on each customer's aircraft fleet. |
| Focus | A Tool for Inputing/Cleaning/Exporting Shop Data Records |
| HAvRel | Honeywell AViation Reliability website |
| IATA | International Air Transport Association |
| ICAO | International Civil Aviation Organization |
| INOP | A unit that does not operate at all. |
| IP | Initial Provisioning |
| ISDS | In Service Data System - Boeing's Data Collection/Storage/Retreival System |
| ITAR | U.S. Department of State International Traffic in Arms Regulations (ITAR) 22 CFR 120-130 - Regarding Export Controlled Data that may not be exported outside of the United States. |
| LRU | Line Replaceable Unit |
| MMA | Monthly Moving Average - A rolling average or moving window average for 3, 6, or 12 month windows. |
| MOD | A MODification made to a unit. Typically denoted on an plate attached to the outside of a unit and in the Shop Repair Record. |
| MSA | Maintenance Support Agreement |
| MTBF(C) | Mean Time Between Failures which Confirm unscheduled removals |
| MTBF(J) | Mean Time Between Failures which Justify unscheduled removals |
| MTBR | Mean Time Between Removals |
| MTBUR | Mean Time Between Unscheduled Removals |
| MTBUR(N) | Mean Time Between Net (Non-Induced) Unscheduled Removals |
| MTTF | Mean Time To Failure - MTTF = MTBF - MTTR |
| MTTR | Mean Time To Repair - MTTR = MTBF - MTTF |
| NFF | No Fault Found |
| ODW | Olathe Data Warehouse - Main Shop Record Data Store for Olathe based General Aviation Products. It also contains history Shop Records for Ft. Lauderdale. |
| PSA | Product Support Agreement |
| Pareto | The Pareto principle (also known as the 80-20 rule) states that, for many events, roughly 80% of the effects come from 20% of the causes. |
| Part Master | A comphrehensive list of parts representative of all units being referenced for a given system. |
| Piece Part | A component typically used in the repair of a larger assembly of components. |
| QDS | Quality Data System - Main Shop Record Data Store for Avionics Repair Records, housed in the CASPER database. |
| RR | Removal Rate Per 1000 Flight Hours |
| RST | Reliability Summary Tables. System used to generate reliability performance data. |
| Repair Codes | Codes used for Return Reason, Failures, and Shop Findings in Shop Records |
| Repeat Offender | A Unit or Aircraft which has experienced three failures for the same reason within the last year. |
| Reporting Hub | Centralized ORACLE Database for Storing Detailed Shop Data, Summarized Shop Data and Reference Tables; Primary Data Source for HAvRel |
| SAR | Service Activity Record |
| SRU | Shop Replaceable Unit |
| Static Reports | Reports which are a snapshot in time, typically delivered to an internal or external customer as a status report on a periodic basis. |
| TAT | Turn Around Time = (Honeywell Shipped Date) minus (Honeywell Received Date) |
| UNK | Unknown |
