# JASC 2230: Auto Throttle System

- Type: JASC system/component code (FAA)
- ATA chapter: 22 Auto Flight
- Title in the code table: AUTO THROTTLE SYSTEM
- Service difficulty reports: 1,084
- FAA code table: https://www.faa.gov/sites/faa.gov/files/JASC_Code.pdf#page=18
- Page: https://openairdocs.org/jasc/2230

## What it covers

The system that automatically controls the position of the throttles to properly manage engine power during all phases of flight/attitude. This includes engaging, sensing, computing, amplifying, controlling, actuating and warning devices. Typical parts are amplifiers, computers, servos, limit switches, clutches, gearboxes, warning lights, etc.

## Latest service difficulty reports

- [SDR ASAA2026101267374](https://openairdocs.org/sdr/ASAA2026101267374), Oct 12, 2026: AUTOTHRUST SYS, MALFUNCTIONED (N386HA)
- [SDR CALA2026091819536](https://openairdocs.org/sdr/CALA2026091819536), Sep 14, 2026: AUTOTHROTTLE SYS, FAULTED (N30401)
- [SDR K11A2026082500385](https://openairdocs.org/sdr/K11A2026082500385), Aug 25, 2026: COMPUTER, FAILED (N307GT)
- [SDR ABXA20260805349](https://openairdocs.org/sdr/ABXA20260805349), Aug 5, 2026: CONTROL PANEL, FAULTED (N745AX)
- [SDR NI6R202608260067](https://openairdocs.org/sdr/NI6R202608260067), Jul 29, 2026: AUTOTHROTTLE SYS, DISCONNECTED (N115Z)
- [SDR QXEA2026070700157](https://openairdocs.org/sdr/QXEA2026070700157), Jul 4, 2026: AUTOTHROTTLE SYS, FAULTED (N636QX)
- [SDR QXEA2026070700156](https://openairdocs.org/sdr/QXEA2026070700156), Jul 4, 2026: THROTTLE, MALFUNCTIONED (N633QX)
- [SDR 2026FA0000537](https://openairdocs.org/sdr/2026FA0000537), Jun 23, 2026: AUTOTHROTTLE SYS, ABNORMAL
- [SDR AALA202606025155](https://openairdocs.org/sdr/AALA202606025155), May 29, 2026: COMPUTER, FAULTED (N306NY)
- [SDR FDEA202605050597](https://openairdocs.org/sdr/FDEA202605050597), May 5, 2026: AUTOTHROTTLE SYS, FAILED (N270FE)
- [SDR QXEA2026050400097](https://openairdocs.org/sdr/QXEA2026050400097), Apr 29, 2026: AUTOTHROTTLE SYS, MALFUNCTIONED (N633QX)
- [SDR QXEA2026042700094](https://openairdocs.org/sdr/QXEA2026042700094), Apr 22, 2026: AUTOTHROTTLE SYS, MALFUNCTIONED (N624QX)
- [SDR QXEA2026042100092](https://openairdocs.org/sdr/QXEA2026042100092), Apr 14, 2026: AUTOTHROTTLE SYS, FAULTED (N648QX)
- [SDR CALA2026041315335](https://openairdocs.org/sdr/CALA2026041315335), Apr 10, 2026: AUTOTHROTTLE SYS, MALFUNCTIONED (N67846)
- [SDR QXEA2026040100073](https://openairdocs.org/sdr/QXEA2026040100073), Mar 30, 2026: AUTOTHROTTLE SYS, MALFUNCTIONED (N655QX)
- [SDR SWAA2026032080287](https://openairdocs.org/sdr/SWAA2026032080287), Mar 16, 2026: COMPUTER, INOPERATIVE (N495WN)
- [SDR SWAA2026032081730](https://openairdocs.org/sdr/SWAA2026032081730), Mar 16, 2026: SERVO, INOPERATIVE (N495WN)
- [SDR CALA2026031714628](https://openairdocs.org/sdr/CALA2026031714628), Mar 15, 2026: COMPUTER, FAULTED (N653UA)
- [SDR QXEA2026031000048](https://openairdocs.org/sdr/QXEA2026031000048), Mar 7, 2026: THROTTLE, MALFUNCTIONED (N667QX)
- [SDR QXEA2026022400043](https://openairdocs.org/sdr/QXEA2026022400043), Feb 23, 2026: THROTTLE, MALFUNCTIONED (N664QX)
- [SDR CNMA202602240001](https://openairdocs.org/sdr/CNMA202602240001), Feb 21, 2026: ANNUNCIATOR, INOPERATIVE (N225NE)
- [SDR DALA2026021801127](https://openairdocs.org/sdr/DALA2026021801127), Feb 10, 2026: AUTOTHROTTLE SYS, FAULTED (N974AT)
- [SDR AALA202602090977](https://openairdocs.org/sdr/AALA202602090977), Feb 7, 2026: AUTOTHROTTLE SYS, FAULTED (N556UW)
- [SDR CALA2026020513602](https://openairdocs.org/sdr/CALA2026020513602), Feb 3, 2026: COMPUTER, FAULTED (N647UA)
- [SDR CALA2026012613242](https://openairdocs.org/sdr/CALA2026012613242), Jan 26, 2026: SWITCHPACK, INOPERATIVE (N37420)
- [SDR CALA2026012713344](https://openairdocs.org/sdr/CALA2026012713344), Jan 25, 2026: CONTROL PANEL, FAULTED (N27271)
- [SDR QXEA2025122900377](https://openairdocs.org/sdr/QXEA2025122900377), Dec 28, 2025: THROTTLE, MALFUNCTIONED (N629QX)
- [SDR DALA2025122309339](https://openairdocs.org/sdr/DALA2025122309339), Dec 17, 2025: SERVO MOTOR, FAULTED (N947DZ)
- [SDR CALA2025121912265](https://openairdocs.org/sdr/CALA2025121912265), Dec 17, 2025: COMPUTER, FAULTED (N647UA)
- [SDR CALA2025121512131](https://openairdocs.org/sdr/CALA2025121512131), Dec 12, 2025: AUTOTHROTTLE SYS, FAULTED (N76522)
- [SDR 2025FA0000821](https://openairdocs.org/sdr/2025FA0000821), Dec 11, 2025: AUTOTHROTTLE SYS, DISCONNECTED
- [SDR ABXA202512062319](https://openairdocs.org/sdr/ABXA202512062319), Dec 2, 2025: AUTOTHROTTLE SYS, MALFUNCTIONED (N763CK)
- [SDR DALA2025120308835](https://openairdocs.org/sdr/DALA2025120308835), Nov 27, 2025: AUTOTHROTTLE SYS, FAULTED (N174DN)
- [SDR CALA2025111911350](https://openairdocs.org/sdr/CALA2025111911350), Nov 17, 2025: AUTOTHROTTLE SYS, FAILED (N76504)
- [SDR ABXA20251114301](https://openairdocs.org/sdr/ABXA20251114301), Nov 14, 2025: CIRCUIT BOARD, FAULTED (N650GT)
- [SDR CALA2025111111138](https://openairdocs.org/sdr/CALA2025111111138), Nov 9, 2025: COMPUTER, FAULTED (N13718)
- [SDR CALA2025091008752](https://openairdocs.org/sdr/CALA2025091008752), Sep 7, 2025: AUTOTHROTTLE SYS, MALFUNCTIONED (N651UA)
- [SDR CALA2025082508095](https://openairdocs.org/sdr/CALA2025082508095), Aug 22, 2025: AUTOTHROTTLE SYS, MALFUNCTIONED (N57855)
- [SDR DXTA2025081504605](https://openairdocs.org/sdr/DXTA2025081504605), Aug 14, 2025: WARNING LIGHT, ILLUMINATED (N582QS)
- [SDR QXEA2025072900285](https://openairdocs.org/sdr/QXEA2025072900285), Jul 28, 2025: THROTTLE, MALFUNCTIONED (N652MK)
- [SDR QXEA2025071400277](https://openairdocs.org/sdr/QXEA2025071400277), Jul 12, 2025: THROTTLE, MALFUNCTIONED (N626QX)
- [SDR AALA202506236919](https://openairdocs.org/sdr/AALA202506236919), Jun 22, 2025: SWITCHPACK, FAILED (N956NN)
- [SDR QXEA2025062400267](https://openairdocs.org/sdr/QXEA2025062400267), Jun 21, 2025: AUTOTHROTTLE SYS, MALFUNCTIONED (N667QX)
- [SDR HALA20250623191](https://openairdocs.org/sdr/HALA20250623191), Jun 21, 2025: METERING UNIT, FAULTED (N380HA)
- [SDR ABXA20250529109](https://openairdocs.org/sdr/ABXA20250529109), May 29, 2025: AUTOTHROTTLE SYS, DEFECTIVE (N1499A)
- [SDR QXEA2025053000234](https://openairdocs.org/sdr/QXEA2025053000234), May 29, 2025: AUTOTHROTTLE SYS, FAILED (N657QX)
- [SDR QXEA2025052800227](https://openairdocs.org/sdr/QXEA2025052800227), May 27, 2025: THROTTLE, MALFUNCTIONED (N657QX)
- [SDR QXEA2025052000180](https://openairdocs.org/sdr/QXEA2025052000180), May 18, 2025: THROTTLE, FAULTED (N642QX)
- [SDR DALA2025051503753](https://openairdocs.org/sdr/DALA2025051503753), May 10, 2025: ANNUNCIATOR, MALFUNCTIONED (N318DX)
- [SDR QXEA2025051200175](https://openairdocs.org/sdr/QXEA2025051200175), May 9, 2025: AUTOTHROTTLE SYS, MALFUNCTIONED (N624QX)

---
From OpenAirDocs.org, an independent open copy of FAA data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.