# JASC 2250: Aerodynamic Load Alleviating

- Type: JASC system/component code (FAA)
- ATA chapter: 22 Auto Flight
- Title in the code table: AERODYNAMIC LOAD ALLEVIATING
- Service difficulty reports: 15
- FAA code table: https://www.faa.gov/sites/faa.gov/files/JASC_Code.pdf#page=18
- Page: https://openairdocs.org/jasc/2250

## What it covers

The system that automatically corrects and provides for gust loading/upset, aerodynamic augmentation, alleviation, suppression, ride control, etc. This includes sensing, computing, actuating, indicating, internal monitoring, warning devices, etc.

## Service difficulty reports (15)

- [SDR SWIA201642734](https://openairdocs.org/sdr/SWIA201642734), Oct 24, 2016: Cndair CL6002B19. CIRCUIT CARD. FAILED. UNCOMMANDED YAW CONTROL AT REACHING CRUISE ALTITUDE. DECLARED AN EMERGENCY. REMOVED AND REPLACED THE NR 2 FCC CARD (N947SW)
- [SDR DALA2016032902454](https://openairdocs.org/sdr/DALA2016032902454), Mar 27, 2016: Doug MD9030. CONTROL UNIT. FAILED. ABORTED TAKEOFF AT APPROXIMATELY 5 KNOTS DUE TO AN ACS FAULT ON EOAP. MESSAGE EXTINGUISHED WHEN THROTTLES WERE RETURNED  (N910DN)
- [SDR 2015FA0000382](https://openairdocs.org/sdr/2015FA0000382), Aug 7, 2015: Beech 400A. COMPUTER. INTERMITTENT. YAW DAMP DISENGAGED SEVERAL TIMES DURING LANDING DECENT. (N115XP)
- [SDR Z4AR20121018002](https://openairdocs.org/sdr/Z4AR20121018002), Oct 16, 2012: Beech C90A. AIR FILTER. LEAKING. FOUND DEFECTIVE 2J4-7 AIR FILTER CAUSING FAILURE OF THE ACFT'S RUDDER BOOST SYS. A PIN HOLE WAS FOUND IN THE WELD SEAM O (N417SH)
- [SDR UALA2010020300427](https://openairdocs.org/sdr/UALA2010020300427), Feb 2, 2010: Airbus A320232. COMPUTER. MALFUNCTIONED. LT MOD LATERAL BOUNCE 330-250 KTS. WITH A-P 1 OR 2 ON DURING DESCENT. APPEARED TO DIMINISH. CREW STATED YAW WAS FELT IN  (N461UA)
- [SDR AALA20072441](https://openairdocs.org/sdr/AALA20072441), Dec 13, 2007: Airbus A300B4605R. ACTUATOR. INOPERATIVE. MIA INFLIGHT T377/13DEC - NUMBER ONE YAW DAMPER PADDLE TRIPPED ON TAKEOFF. RETURNED TO MIA AND LANDED WITHOUT INCIDENT.  (N18066)
- [SDR AALA20070076](https://openairdocs.org/sdr/AALA20070076), Jan 13, 2007: Boeing 757223. PSEU. INOPERATIVE. BOS INFLIGHT T586/13JAN AT FLIGHT LEVEL 320, AIRCRAFT YAWED HARD TO THE LEFT. EMERGENCY DOOR MESSAGE ON FORWARD EICAS. M (N606AA)
- [SDR MASA200400561](https://openairdocs.org/sdr/MASA200400561), Oct 4, 2004: Emb EMB145LR. YAW DAMPER. WARNING LIGHT. ASH 2607 CLT - RETURNED TO THE GATE FOR A YAW DAMPER FAILED AFTER PUSHBACK. MAINTENANCE RESET THE YAW DAMP SYSTEM. (N855MJ)
- [SDR ABXA040134](https://openairdocs.org/sdr/ABXA040134), Mar 30, 2004: Boeing 767231. A/C PACK. SHUTDOWN. DURING APPROACH TO RUNWAY 22L AT MHR, WHEN LANDING GEAR WAS LOWERED, RIGHT PACK SHUT OFF AND LOC FAILED. MISSED APPROACH (N708AX)
- [SDR XNOA1177](https://openairdocs.org/sdr/XNOA1177), Feb 19, 2004: Airbus A300B4203. COMPUTER. DISENGAGED. NR 1 YAW DAMPER WILL NOT ENGAGE. ITEM TRANSFERRED TO DMI CONTROL NR 4107 IAW ENA MEL 22-21-01 CAT A PLACARDS INSTALLED.  (N373PC)
- [SDR BAQA084041](https://openairdocs.org/sdr/BAQA084041), Dec 10, 2003: Urocop EC135P1. COMPUTER. INTERMITTENT. SAS COMPUTER HAS INTERMITENT KICK. REPLACED WITH SERVICEABLE ASSET PART. (N577LF)
- [SDR BAQA091168](https://openairdocs.org/sdr/BAQA091168), Nov 10, 2003: Urocop EC135P1. FIBER OPTIC GYRO. INTERMITTENT. FIBER OPTIC GYRO PRODUCING YAW INTERMITTENT INTERRUPTIONS. KEEPS GOING OFFLINE. REPLACED WITH SERVICEABLE UNIT. (N135ME)
- [SDR MALA030399](https://openairdocs.org/sdr/MALA030399), Aug 30, 2003: Saab 340B. LIGHT. LOOSE. PILOT REPORTED FLOOR LIGHTING COMING LOOSE. RESECURED FLOOR LIGHTS. (N429XJ)
- [SDR 99ZZZX1730](https://openairdocs.org/sdr/99ZZZX1730), Mar 4, 1999: Lear 35LEAR. COMPUTER. MALFUNCTIONED. AUG-AIL - BLEW CIRCUIT BREAKER GOING INTO (BDL). MEL'D AUG-AIL SYSTEM AND FLEW TO CMH. REMOVED AND REPLACED SPOILERON CO (N1140A)
- [SDR AWXA9500443](https://openairdocs.org/sdr/AWXA9500443), Jul 16, 1995: Boeing 7373G7. EEL WIRING. LOOSE. PHX - DURING ROUTINE MAINTENANCE CHECK, FOUND FLOOR MOUNTED EMERGENCY EXIT LIGHTS INOPERATIVE FROM ROW 14 THROUGH ROW 18 (N305AW)

## Other codes in chapter 22

- [JASC 2200](https://openairdocs.org/jasc/2200): Auto Flight System (567 reports)
- [JASC 2210](https://openairdocs.org/jasc/2210): Autopilot System (4,012 reports)
- [JASC 2211](https://openairdocs.org/jasc/2211): Autopilot Computer (585 reports)
- [JASC 2212](https://openairdocs.org/jasc/2212): Altitude Controller (29 reports)
- [JASC 2213](https://openairdocs.org/jasc/2213): Flight Controller (148 reports)
- [JASC 2214](https://openairdocs.org/jasc/2214): Autopilot Trim Indicator (9 reports)
- [JASC 2215](https://openairdocs.org/jasc/2215): Autopilot Main Servo (267 reports)
- [JASC 2216](https://openairdocs.org/jasc/2216): Autopilot Trim Servo (128 reports)
- [JASC 2220](https://openairdocs.org/jasc/2220): Speed-Attitude Correction System (118 reports)
- [JASC 2230](https://openairdocs.org/jasc/2230): Auto Throttle System (1,084 reports)
- [JASC 2297](https://openairdocs.org/jasc/2297): Auto Flight System Wiring (149 reports)

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