# JASC 7120: Engine Mount Section

- Type: JASC system/component code (FAA)
- ATA chapter: 71 Powerplant
- Title in the code table: ENGINE MOUNT SECTION
- Service difficulty reports: 3,028
- FAA code table: https://www.faa.gov/sites/faa.gov/files/JASC_Code.pdf#page=60
- Page: https://openairdocs.org/jasc/7120

## What it covers

The structural framework which supports the engine on the nacelle, firewall or pylon. Typical parts are mount, bracket, fitting, shock mount, bolt, isolator, hanger, etc.

## Service difficulty reports (3,028, newest 50)

- [SDR DALA2026101905732](https://openairdocs.org/sdr/DALA2026101905732), Oct 17, 2026: Airbus A330941. MOUNT. DAMAGED. FWD MOUNT FAILED FAILSAFE PIN CHECK ON ESN 075221. REPLACED ENGINE MOUNT PER A330 AMM 71-21. (1870925) AIRCRAFT WAS GROU (N430DX)
- [SDR ICRR202610090001](https://openairdocs.org/sdr/ICRR202610090001), Oct 9, 2026: Cndair CL600*. THRUST SHAFT. ABNORMAL. FAILED MAGNETIC PARTICLE INSPECTION - SUBSURFACE INDICATIONS FOUND ON THE THRUST SHAFT.
- [SDR UIEA2026100600954](https://openairdocs.org/sdr/UIEA2026100600954), Oct 7, 2026: Boeing 74745EF. MOUNT. CRACKED. FOUND CRACK INDICATION DURING OPEN HOLE INSPECTION IN OTBD BARREL NUT BORE OF #2 PYLON AFT ENGINE MOUNT BULKHEAD FITTING (N486MC)
- [SDR YN8R2026100600815](https://openairdocs.org/sdr/YN8R2026100600815), Oct 6, 2026: Cessna 425. MOUNT. CRACKED. DURING THE PHASE 32, SENT THE ENGINE AND NACELLE TRUSSES OUT FOR NDI PER 5-14-22. THE ENGINE MOUNTS ARE NOT CALLED OUT F (N425CC)
- [SDR AALA202609276525](https://openairdocs.org/sdr/AALA202609276525), Sep 25, 2026: Airbus A319112. THRUST LINK. DAMAGED. AIRCRAFT IN BASE MAINTENANCE: LEFT ENGINE FORWARD MOUNT INBOARD THRUST LINK DAMAGED BY THE ANTI-ROTATION CLIP CONTACTING (N717UW)
- [SDR ICRR202609140001](https://openairdocs.org/sdr/ICRR202609140001), Sep 14, 2026: Cndair CL600*. THRUST SHAFT. ABNORMAL. FAILED MAGNETIC PARTICLE INSPECTION. SUBSURFACE INDICATIONS FOUND
- [SDR AALA202609102731](https://openairdocs.org/sdr/AALA202609102731), Sep 9, 2026: Airbus A319132. THRUST LINK. NICKED. AIRCRAFT IN BASE MAINTENANCE: ENGINE 1 FORWARD MOUNT INBOARD THRUST LINK HAS NICK ON FORWARD ROD END OUTBOARD SIDE LOWER (N801AW)
- [SDR IPXA2026101228909](https://openairdocs.org/sdr/IPXA2026101228909), Sep 7, 2026: Airbus A300F4622R. MOUNT. CORRODED. NR 1 ENGINE PYLON AFT ENGINE MOUNT HAS CORROSION ON THE MATING SURFACE. CLEANED SURFACE CORROSION IAW SRM 51-74-10. REAM (N153UP)
- [SDR SWAA2026090301846](https://openairdocs.org/sdr/SWAA2026090301846), Aug 30, 2026: Boeing 7377H4. STRUT. CRACKED. NR 1 ENGINE TURBINE REAR FRAME HAD A CRACK ON STRUT NR 15 AT C2, LOCATION MEASURING 0.0895" CW EA M-21-172-00808 NR 1 EN (N218WN)
- [SDR HNAA2026100500946](https://openairdocs.org/sdr/HNAA2026100500946), Aug 28, 2026: Emb EMB145LR. YOKE. DAMAGED. PYLON YOKE 2 UPPER FLANGE, LT & RT FWD RIVET HOLES ELONGATED. UPSIZED HOLES, INSTALLED BUSHINGS AND RIVETS IAW SB 145-54 (N653AE)
- [SDR 2026FA0000660](https://openairdocs.org/sdr/2026FA0000660), Aug 20, 2026: Piper PA44180. NUT. SHEARED. DURING THE AIRCRAFT'S FIRST 100 HOUR INSPECTION, THERE IS TASK TO RETORQUE THE ENGINE MOUNT-TO-FIREWALL BOLTS AS SPECIFI (N60WU)
- [SDR SWAA2026082736697](https://openairdocs.org/sdr/SWAA2026082736697), Jul 31, 2026: Boeing 7378H4. MOUNT. CORRODED. #2 ENGINE FWD ENGINE MOUNT HAS EXTENSIVE FRETTING CORROSION ON THE HANGAR FITTING AND FAN CASE FITTING AT THE OUTBOARD S (N8546V)
- [SDR HNAA2026082400775](https://openairdocs.org/sdr/HNAA2026082400775), Jul 24, 2026: Emb EMB145LR. YOKE. CRACKED. LEFT ENGINE PYLON LOWER FWD YOKE CRACKED. R & R YOKE IAW SRM 51-40-02. (N925AE)
- [SDR ICRR202607220004](https://openairdocs.org/sdr/ICRR202607220004), Jul 22, 2026: Cndair CL600*. THRUST SHAFT. ABNORMAL. FAILED MAGNETIC PARTICLE INSPECTION - LINEAR INDICATIONS FOUND
- [SDR ICRR202607220003](https://openairdocs.org/sdr/ICRR202607220003), Jul 22, 2026: Cndair CL600*. THRUST SHAFT. ABNORMAL. FAILED MAGNETIC PARTICLE INSPECTION - LINEAR INDICATIONS FOUND
- [SDR ICRR202607220002](https://openairdocs.org/sdr/ICRR202607220002), Jul 22, 2026: Cndair CL600*. THRUST SHAFT. ABNORMAL. FAILED MAGNETIC PARTICLE INSPECTION - LINEAR INDICATIONS FOUND
- [SDR ICRR202607220001](https://openairdocs.org/sdr/ICRR202607220001), Jul 22, 2026: Cndair CL600*. THRUST SHAFT. ABNORMAL. FAILED MAGNETIC PARTICLE INSPECTION - LINEAR INDICATIONS FOUND
- [SDR AALA202607202616](https://openairdocs.org/sdr/AALA202607202616), Jul 16, 2026: Airbus A320214. LINK. WORN. AIRCRAFT IN BASE MAINTENANCE: RIGHT ENGINE AFT MOUNT OUTBOARD LINK IS WORN. MAINTENANCE REPLACED THE RIGHT ENGINE AFT MO (N105UW)
- [SDR HNAA2026081400718](https://openairdocs.org/sdr/HNAA2026081400718), Jul 9, 2026: Emb EMB145LR. YOKE. CRACKED. R/H ENGINE LOWER FWD ENGINE YOKE FITTING HAS A CRACK. REMOVED AND REPLACED CRACKED RH ENGINE LOWER FWD ENGINE YOKE FITTI (N942LL)
- [SDR ICRR202607070002](https://openairdocs.org/sdr/ICRR202607070002), Jul 7, 2026: Cndair CL600*. THRUST SHAFT. CRACKED. FAILED MAGNETIC PARTICLE INSPECTION - SUBSURFACE INDICATIONS FOUND
- [SDR ICRR202607070001](https://openairdocs.org/sdr/ICRR202607070001), Jul 7, 2026: Cndair CL600*. THRUST SHAFT. CRACKED. FAILED MAGNETIC PARTICLE INSPECTION. SUBSURFACE INDICATIONS FOUND
- [SDR ICRR202606240001](https://openairdocs.org/sdr/ICRR202606240001), Jun 24, 2026: Boeing 737. THRUST LINK. ABNORMAL. MAGNETIC PARTICLE INSPECTION FAILED DUE TO SUBSURFACE INDICATION (SOPM 20-20-01).
- [SDR 2026FA0000530](https://openairdocs.org/sdr/2026FA0000530), Jun 19, 2026: Gulstm GVI. MOUNT. OUT OF POSITION. DURING LT PYLON ACCESS FOR ACB001, IT WAS NOTICED THAT THE LT ENIGNE UPPER AFT ENGINE MOUNT ANTI ROTATION DEVICE (FWD SI (N71Z)
- [SDR ICRR202606090003](https://openairdocs.org/sdr/ICRR202606090003), Jun 9, 2026: Cndair CL600*. SHAFT. ABNORMAL. FAILED MPI INSPECTION
- [SDR ICRR202606090002](https://openairdocs.org/sdr/ICRR202606090002), Jun 9, 2026: Cndair CL600*. SHAFT. ABNORMAL. FAILED MPI INSPECTION
- [SDR ICRR202606090001](https://openairdocs.org/sdr/ICRR202606090001), Jun 9, 2026: Cndair CL600*. SHAFT. ABNORMAL. FAILED MPI INSPECTION
- [SDR 2026FA0000405](https://openairdocs.org/sdr/2026FA0000405), May 19, 2026: Piper PA18135. MOUNT. BROKEN. ENGINE MOUNT COMPLETE BROKEN IN TWO PARTS. (N9974Q)
- [SDR ICRR202605150001](https://openairdocs.org/sdr/ICRR202605150001), May 15, 2026: Cndair CL6002B19. LINK. CRACKED. CRACK DISCOVERED DURING ULTRASONIC INSPECTION.
- [SDR IPXA2026060232065](https://openairdocs.org/sdr/IPXA2026060232065), May 11, 2026: Boeing 75724APF. MOUNT. GOUGED. NR 2 ENG AFT MOUNT HAS CHIPPED MATERIAL ON UPPER SURFACE, FLL-0035, ATA 71. ACCOMPLISHED REPAIR PER EO-97541-REQ1 AND VT (N412UP)
- [SDR IPXA2026060289725](https://openairdocs.org/sdr/IPXA2026060289725), May 8, 2026: Airbus A300F4622R. MOUNT. DAMAGED. REMOVE AND ROUTE FITTING (#1 ENGINE MOUNT) P/N A5461092600000. FROM A/C N145UP TO N141UP. INSTALLATION OF THE AFT FITTIN (N145UP)
- [SDR VNAA2026050417002](https://openairdocs.org/sdr/VNAA2026050417002), Apr 24, 2026: Cndair CL6002D24. PIN. LOOSE. RIGHT ENG VIBE BETWEEN 1.5-1.9 CONTINUOUSLY. RAN QRH PROCEEDURE 3 TIMES. WHEN WE DECREASED POWER VIBES INCREASED TO 1.9; (N587NN)
- [SDR IPXA2026060456403](https://openairdocs.org/sdr/IPXA2026060456403), Apr 17, 2026: Airbus A300F4622R. MOUNT. DAMAGED. NR 1 ENGINE, AFT MOTOR ATTACH FITTING HAS CORROSION AND PITTING ON MATTING SURFACE ALL RII STEPS C/W REF GMM CH4. WITNES (N144UP)
- [SDR HNAA2026052000429](https://openairdocs.org/sdr/HNAA2026052000429), Apr 9, 2026: Emb EMB145LR. YOKE. CRACKED. RIGHT ENGINE YOKE LOWER FWD FITTING HAS A POSSIBLE CRACK. REMOVED AND REPLACED CRACKED RT ENGINE YOKE LOWER FWD FITTING  (N655AE)
- [SDR SWAA2026050687867](https://openairdocs.org/sdr/SWAA2026050687867), Apr 9, 2026: Boeing 7378H4. MOUNT. CORRODED. NR 2 ENGINE AFT MOUNT HAS EVIDENCE OF FRETTING ON THE OUTBOARD LINK AT TRF ATTACHMENT. REMOVED NR 2 ENGINE AFT MOUNT IAW (N8531Q)
- [SDR SWIA2026031477512](https://openairdocs.org/sdr/SWIA2026031477512), Mar 14, 2026: Cndair CL6002C10. THRUST SHAFT. LOOSE. BEFORE REMOVING HI-LOKS ON LT & RT ENGINES AFT MOUNT, AFT SIDE OF THRUST SHAFT HOLE STARTED TO SPIN. CONFIRMED LT & RT E (N611SK)
- [SDR ICRR202603110002](https://openairdocs.org/sdr/ICRR202603110002), Mar 11, 2026: Cndair CL600*. SHAFT. ABNORMAL. SUBSURFACE INDICATION DISCOVERED DURING MAGNETIC PARTICLE INSPECTION
- [SDR ICRR202603110001](https://openairdocs.org/sdr/ICRR202603110001), Mar 11, 2026: Cndair CL600*. SHAFT. CRACKED. CRACK WAS FOUND DURING MAGNETIC PARTICLE INSPECTION ON THE THRUST SHAFT OF THE ENGINE MOUNT.
- [SDR 2026FA0000158](https://openairdocs.org/sdr/2026FA0000158), Mar 5, 2026: Cessna 182Q. MOUNT. CORRODED. THE DISSIMILAR METAL TAPE SUPPLIED IN STC SA00496SE (U-LINE ELECTRICAL TAPE) IS CAUSING CORROSION ON THE ENGINE MOUNT TO (N759QH)
- [SDR 2026FA0000136](https://openairdocs.org/sdr/2026FA0000136), Feb 18, 2026: Tecnam P2006T. BLOCK. CRACKED. CRACKING AND SEPARATION OF RUBBER ON ENGINE MOUNTING BLOCK HAS CAUSED EXCESSIVE VIBRATION, RESULTING OF MOUNTING THROUGH (N248T)
- [SDR AALA202602134076](https://openairdocs.org/sdr/AALA202602134076), Feb 12, 2026: Airbus A321231. PIN. GOUGED. AIRCRAFT IN BASE MAINTENANCE: LEFT ENGINE AFT ENGINE MOUNT INBOARD UPPER INNER PIN HAS GOUGES/SURFACE DEFORMED. REPLACED (N987AM)
- [SDR VNAA202602090064](https://openairdocs.org/sdr/VNAA202602090064), Feb 10, 2026: Cndair CL6002C10. MOUNT. DAMAGED. R/H FWD ENGINE MOUNT HAS DAMAGE ON LOWER FITTING MARKED WITH RED TAPE, (N510AE)
- [SDR SWAA2026031170227](https://openairdocs.org/sdr/SWAA2026031170227), Feb 5, 2026: Boeing 7378H4. MOUNT. CORRODED. NR 2 ENGINE AFT MOUNT HAS EVIDENCE OF FRETTING ON THE OUTBOARD LINK AT TRF ATTACHMENT. REMOVED AND INSTALLED NEW AFT ENG (N8525S)
- [SDR SWAA2026030267995](https://openairdocs.org/sdr/SWAA2026030267995), Feb 5, 2026: Boeing 7378H4. MOUNT. CORRODED. NR 1 ENGINE FWD MOUNT HAD EVIDENCE OF FRETTING AT THE OTBD LINK ASSEMBLY UPPER AND LOWER ATTACH BOLTS. R & R THE NR 1 EN (N8532S)
- [SDR SWIA2026012875732](https://openairdocs.org/sdr/SWIA2026012875732), Jan 28, 2026: Cndair CL6002B19. YOKE. GOUGED. ORDERED AND RECEIVED RT ENGINE FWD MOUNT YOKE 601370158, S/N ) WITH GOUGES. RECEIVED REO 601R-71-21-082 REV -- DATE 2026 (N952SW)
- [SDR SWIA2021012376013](https://openairdocs.org/sdr/SWIA2021012376013), Jan 23, 2026: Cndair CL6002B19. LINK. DAMAGED. MX REQUESTS REMOVAL AND REPLACEMENT OF LH ENGINE FWD YOKE LINK. REMOVED AND REPLACED LT ENGINE FWD YOKE LINK IN REFERENC (N448SW)
- [SDR DALA2026012000420](https://openairdocs.org/sdr/DALA2026012000420), Jan 17, 2026: Boeing 757232. BUSHING. MISSING. NUMBER 2 ENGINE PYLON BULKHEAD, AFT ENGINE MOUNT FORWARD SHEAR PIN BUSHING NOT INSTALLED. PERFORMED FPI ON AFT ENGINE MO (N654DL)
- [SDR CALA2026011913086](https://openairdocs.org/sdr/CALA2026011913086), Jan 14, 2026: Airbus A319131. PIN. CORRODED. NR 1 ENGINE AFT MOUNT LOWER INBD, CENTER,OTBD INNER PINS & OTBD UPPER INNER PIN ARE CORRODED [04 PINS]. REPLACED NR 1 EN (N853UA)
- [SDR 2026FA0000006](https://openairdocs.org/sdr/2026FA0000006), Jan 7, 2026: Cessna 425. MOUNT. CRACKED. DURING MINOR PHASE INSPECTIONS, THE RH ENGINE OUTBOARD ENGINE MOUNT P/N: 5951048-2 WAS VISUALLY FOUND TO BE CRACKED. AFT (N353ES)
- [SDR COEA2026042815801](https://openairdocs.org/sdr/COEA2026042815801), Jan 5, 2026: Aerosp ATR72212. MOUNT. EXCESS PLAY. L/H NACELLE SPINE COWL FORWARD ATTACH POINT TO THE ENGINE MOUNT TUBE HAS PLAY. REPAIR PER ATR72 SRM 541162-300-801-A01 R (N801FX)
- [SDR CALA2025122912465](https://openairdocs.org/sdr/CALA2025122912465), Dec 19, 2025: Airbus A320232. CROSSBEAM. WORN. NUMBER 1 ENG PNEUMATIC FLEX LINE CHAFING DEEPLY INTO FWD ENG MOUNT LT THRUST LINK AND MOUNT CROSSBEAM OTBD EDGE RADIUS.  (N451UA)

All 3,028: https://openairdocs.org/jasc/7120/reports.md

## Other codes in chapter 71

- [JASC 7100](https://openairdocs.org/jasc/7100): Powerplant System (634 reports)
- [JASC 7110](https://openairdocs.org/jasc/7110): Engine Cowling System (2,324 reports)
- [JASC 7111](https://openairdocs.org/jasc/7111): Engine Cowl Flaps (57 reports)
- [JASC 7112](https://openairdocs.org/jasc/7112): Engine Air Baffle Section (27 reports)
- [JASC 7130](https://openairdocs.org/jasc/7130): Engine Fireseals (66 reports)
- [JASC 7160](https://openairdocs.org/jasc/7160): Engine Air Intake System (1,161 reports)
- [JASC 7170](https://openairdocs.org/jasc/7170): Engine Drains (130 reports)
- [JASC 7197](https://openairdocs.org/jasc/7197): Powerplant System Wiring (32 reports)

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