ADIRS-1 निष्क्रिय
Primary ADIRS channel 1 failed; aircraft relying on remaining or standby navigation sources in accordance with MEL.
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MEL and CDL MEL and CDL
Browse MEL and CDL MEL and CDL terms for pilots, air traffic controllers, cabin crew and aviation learners.
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ATA अध्याय संदर्भ
Standardized reference number identifying aircraft system/component according to the ATA 100/2200 maintenance coding system.
View termETOPS न्यूनतम उपकरण सूची
The Minimum Equipment List applicable to extended-range (ETOPS) flights, specifying the minimum required equipment for oceanic and remote area operations.
View termVHF रेडियो 1 खराब
Primary VHF radio channel 1 is not functional, requiring use of alternate radio or backup for ATC communications.
View termअंतरिम प्रक्रिया संशोधन
A temporary update to operational or maintenance procedures, issued before the next official revision, to address urgent safety, regulatory, or operational requirements. Used in documentation and flight operations until formal revision is published.
View termअनियमित जाँच
Maintenance inspection not aligned with normal cycle, scheduled according to special interval or condition.
View termअनुसूचित घटक परिवर्तन
Pre-planned replacement of a part or system component at a specified interval or due time according to maintenance schedule.
View termअनुसूचित घटक परिवर्तन
Pre-planned replacement of an aircraft component at specific intervals in accordance with the maintenance schedule.
View termआपूर्ति हेतु प्रतीक्षित पुर्जे
Maintenance action deferred because required replacement part is not yet available in inventory or supply chain.
View termइंजीनियरिंग आदेश लागू
Formal modification or repair directive implemented and documented by engineering, referenced in aircraft technical records.
View termइंटरफ़ोन काम नहीं कर रहा
Internal crew communication system not functioning, affecting cockpit-cabin coordination and triggering MEL action.
View termउड़ान के दौरान इंजन स्टार्ट
The procedure of starting an engine during flight, often due to engine flameout or following maintenance.
View termउपभोग्य वस्तु पुनः भरी गई
A maintenance log entry confirming replenishment of expendable items such as oil, hydraulic fluid, or oxygen.
View termएंटी-आइस वाल्व विफलता
Malfunction of wing or engine anti-ice valve preventing hot-air flow, compromising ice protection and requiring flight profile adjustment.
View termएंटीस्लिप सिस्टम खराब
A condition where the antiskid braking system is not operational, requiring alternate braking procedures and possible performance penalties.
View termएयर-कंडीशनिंग पैक खराब
Indicates a failure of an air-conditioning pack, possibly affecting cabin pressurization and requiring MEL compliance before dispatch.
View termएयरवर्दिनेस डायरेक्टिव दर्ज
Mandatory compliance record entered in technical log documenting completion of authority-issued safety directive.
View termऑक्सिलरी पावर यूनिट के साथ डिस्पैच
Authorization for a flight to dispatch with the Auxiliary Power Unit (APU) operating or required, usually due to ground power limitations or MEL stipulations.
View termऑपरेटर न्यूनतम उपकरण सूची
The MEL approved by the state of the operator, tailored to specific airline operations, listing minimum equipment required for dispatch.
View termऑपरेशनल इम्पैक्ट नोट
Written record in technical log noting operational effects or limitations resulting from an aircraft defect, MEL, or deferred item.
View termऑपरेशनल प्रक्रिया
A mandatory action or set of actions required by flight crew to safely operate an aircraft system, especially with an MEL/CDL item.
View termकंपास विचलन
Error between magnetic compass indication and actual magnetic heading exceeding permissible limits; requires calibration swing.
View termकार्य कार्ड पूर्ण
Documented evidence that all steps of an assigned maintenance task card have been performed and signed off.
View termकेबिन लॉग दोष
A discrepancy, malfunction, or abnormality reported by crew and recorded in the aircraft cabin log for maintenance attention, typically affecting passenger or crew services and requiring rectification before or after flight.
View termकैबिन दबाव नियंत्रक 1 निष्क्रिय
Primary automatic pressurization channel failed; crew managing cabin differential in manual mode per QRH procedures.
View termकॉन्फ़िगरेशन डिविएशन सूची आइटम
An entry in the Configuration Deviation List authorizing dispatch with specific external or configuration deviations, within specified limitations.
View termकॉन्फ़िगरेशन डिविएशन सूची आइटम
An authorized deviation from aircraft configuration detailed in the Configuration Deviation List, permitting dispatch with specific missing or inoperative external parts.
View termकॉन्फ़िगरेशन विचलन
A formally approved variation from the aircraft’s standard configuration as specified in the Configuration Deviation List (CDL), which may permit flight with certain external parts missing or inoperative.
View termकॉन्फ़िगरेशन विचलन सूची
An official document specifying permissible aircraft configuration deviations that do not affect safe flight, used for dispatch with non-standard configurations.
View termक्रू सीट निष्क्रिय
Flight-deck seat fails to lock, adjust, or retract, potentially compromising crew safety and requiring MEL evaluation.
View termग़ैर-आवश्यक उपकरण और साज-सज्जा
Equipment and furnishings that are not required for safe operation or regulatory compliance and may be inoperative without affecting dispatch eligibility.
View termग़ैर-नियमित कार्य प्रविष्टि
A maintenance log entry documenting unscheduled or unexpected technical issues or discrepancies detected during aircraft operations, requiring attention beyond regular or planned maintenance.
View termगैर-आवश्यक उपकरण और साज-सज्जा
Equipment or furnishings that are not essential for the airworthiness or safety of the flight and may be deferred.
View termजाँच शीघ्र ही देय
Notification that a scheduled inspection interval will be reached within a short time frame, requiring planning.
View termजीवनरक्षक जैकेट अनुपस्थित
Required passenger flotation device absent from its assigned seat location, rendering that position unserviceable until replaced in accordance with the MEL.
View termट्रांसपोंडर खराबी
The aircraft’s transponder is not transmitting, impacting radar identification and requiring ATC notification and alternate procedures.
View termडिस्पैच विचलन
An authorized variation from standard aircraft configuration or equipment status, documented for legal dispatch of a flight.
View termडिस्पैच सीमा
Restrictive condition under which an aircraft may be dispatched due to system defect or MEL, affecting allowable operation.
View termतकनीकी प्रेषण शीट
A formal document or electronic record certifying an aircraft’s airworthiness and readiness for flight after maintenance actions or inspections, required to be completed and signed by authorized personnel before each departure.
View termथ्रस्ट रिवर्सर खराब
The thrust reverser mechanism cannot be deployed, requiring alternative braking methods and possibly affecting landing performance.
View termदोहराया गया आइटम
A recurring defect or observation required to be checked, recorded, or repeated at intervals specified in the MEL or logbook.
View termनिकासी स्लाइड काम नहीं कर रही
Inflatable escape slide at an aircraft door unserviceable, precluding passenger carriage until rectified or deferred per MEL.
View termनियंत्रण संख्या
A unique identifier assigned to a deferred defect, MEL/CDL item, or maintenance entry for tracking and compliance.
View termनो-गो आइटम
An inoperative or missing item which, according to MEL or regulatory requirements, prevents the aircraft from being legally dispatched.
View termन्यूनतम उपकरण
The essential items that must be serviceable for an aircraft to be dispatched under the MEL; if not available, flight is not permitted.
View termन्यूनतम उपकरण सूची
An approved document listing the minimum equipment required for safe operation of an aircraft, permitting specified inoperative items under controlled conditions.
View termपिटोट कवर लगा है
Protective pitot-tube cover still fitted, blocking dynamic-pressure input and rendering airspeed indications unreliable.
View termप्रदर्शन दंड
A reduction in aircraft performance, such as climb, takeoff, or landing, resulting from inoperative systems or configuration deviations.
View termप्रमाणित सेवा विमोचन
Formal written declaration by licensed engineer that aircraft or component is airworthy and fit for return to operation.
View termफंक्शनल टेस्ट आवश्यक
Indicates requirement for an operational or systems test to confirm correct function of a repaired or replaced item.
View termफेरी उड़ान अनुमति
Authority granted to reposition an aircraft without revenue passengers, often under MEL limitations, to maintenance or delivery point.
View termफ्लाइट क्रू दोष रिपोर्ट
Written logbook entry by flight crew describing observed technical defect or malfunction requiring maintenance action.
View termफ्लीट अभियान निर्देश
Mandatory maintenance or modification order issued by the operator or manufacturer, applicable to an entire fleet.
View termब्रेक घिसावट
The condition in which the aircraft’s brake components have undergone material loss due to repeated use, requiring monitoring and possible replacement if limits are exceeded.
View termब्लीड-ऑफ टेकऑफ़
A take-off performed with engine bleed air turned off to optimize thrust, typically when performance-limited.
View termमरम्मत अंतराल
The maximum period permitted by the MEL for rectifying an inoperative item before mandatory maintenance is required.
View termमेंटेनेंस प्रक्रिया
A required action by maintenance personnel to address an MEL/CDL item, often prerequisite for dispatch or rectification.
View termरक्षात्मक श्वसन उपकरण अनुपस्थित
Required PBE smoke-hood absent from crew station or galley, violating safety regulations until replaced.
View termरखरखाव जांच उड़ान
Post-maintenance air test conducted to verify aircraft performance and systems before return to commercial service.
View termरखरखाव नियंत्रण केंद्र
Centralized department overseeing aircraft technical status, defect clearance, and authorizing maintenance actions and MEL deferrals.
View termलगातार उड़ानें
A sequence of successive flights where certain MEL/CDL items may remain deferred or require repeated checks as specified.
View termलॉगबुक प्रविष्टि
A formal record in the aircraft technical log documenting the status, action, or deferral of an MEL/CDL item for legal and maintenance tracking.
View termवजन दंड
An increase in operational weight or a reduction in allowable weight imposed due to specific inoperative equipment or configuration deviations.
View termवर्क कार्ड संदर्भ
Unique identifier of a maintenance work card specifying approved procedures for inspection, repair, or modification.
View termवैकल्पिक प्रक्रिया आवश्यक
Standard operating sequence unavailable; crew must follow officially published alternate or contingency checklist.
View termश्रेणी A
A Minimum Equipment List category requiring rectification of an inoperative item within a time period specified in the MEL, usually before next flight.
View termश्रेणी B
A Minimum Equipment List category requiring rectification of an inoperative item within three consecutive calendar days, excluding the day of discovery.
View termश्रेणी C
A Minimum Equipment List category requiring rectification of an inoperative item within ten consecutive calendar days, excluding the day of discovery.
View termश्रेणी D
A Minimum Equipment List category requiring rectification of an inoperative item within 120 consecutive calendar days, excluding the day of discovery.
View termसंशोधन कार्यवाही
The specific maintenance or operational step taken to resolve a defect, discrepancy, or deferred item as documented in the logbook or MEL.
View termसमस्या निवारण आवश्यक
Further diagnostic action needed to isolate cause of technical fault or failure not resolved by initial inspection.
View termसर्विस बुलेटिन लंबित
Manufacturer’s recommended modification or inspection not yet incorporated; outstanding action listed in maintenance records.
View termसहायक जनरेटर निष्क्रिय
Aircraft auxiliary power unit (APU) generator not providing electrical power, requiring external source for ground operations and start.
View termसुधार अंतराल विस्तार
Formal approval to extend the allowable period for repair of a deferred defect beyond original MEL interval.
View termसूचना पट्टिका
An official sign or label installed in the cockpit or cabin to indicate equipment limitations, status, or required procedures per MEL or CDL.
View termसेवा कठिनाई रिपोर्ट
Official report filed to aviation authority documenting significant aircraft/system in-service malfunction, defect, or repeated failure.
View termस्टैंडबाय ADIRU
Independent backup ADIRU providing attitude, heading, and air-data when primary systems are degraded or failed.
View termस्टैटिक विक अनुपस्थित
Static electricity discharge wick absent from wing or control surface, potentially increasing radio interference until replaced.
View termस्थगन
A formal process allowing a non-essential inoperative item to be left unrepaired for a specified time under MEL/CDL limits.
View termस्थगित क्रिया नियंत्रण
Cockpit switch or placard indicating an MEL-approved deferred maintenance item that must not be activated in flight.
View termस्थगित दोष रिपोर्ट
A formal record noting a defect which has been deferred under MEL/CDL procedures, including details of rectification plan and interval.
View termस्थिति निगरानी
Ongoing process of assessing system or component health through data and trend analysis to guide maintenance decisions.
View termस्पॉइलर निष्क्रिय
A system status where one or more spoiler panels are intentionally or automatically rendered inoperative for the flight.
View termहाइड्रॉलिक मात्रा कम
Indicates that the fluid level in a hydraulic reservoir is below the specified minimum for safe system operation.
View term