LYNDEN AIR CARGO, LLC

Operated by LYNDEN AIR CARGO LLC (per NTSB report)

Operated by Lynden Air Cargo (per NTSB report)

The fatigue failure of the forward pressure bulkhead canted web that originated from stress corrosion cracking areas. Contributing to the failure were inspection procedures and intervals inadequate to identify the crack.

Operated by Lynden Air Cargo — Flag carrier (121) Operator Does Business As: Lynden Air Cargo (per NTSB report)

The pilot's excessive rotation of the airplane during takeoff, which resulted in dragging the tail on the runway and substantial damage.

Operated by LYNDEN AIR CARGO (per NTSB report)

The pilot's decision to continue VFR flight into instrument meteorological conditions, and his failure to maintain adequate clearance from rising terrain. Factors associated with the accident were the rising terrain and clouds.

Part: STIFFENER — CRACKED (ZONE 200) · airframe 43,877 hrs · 28,641 cycles

DURING SCHEDULED B-3 CHECK WHILE PERFORMING OTHER MAINTENANCE, FOUND BS 491 BELLY STIFFENER CRACKED AT BS 491, RBL 62, WL 140. REPAIRED BY REPLACEMENT ACCOMPLISHED IAW SMP583 SRM, 51-60 & 51-70.

Part: BUMPER — CRACKED (ZONE 100) · airframe 43,877 hrs · 28,641 cycles

DURING SCHEDULED B-3 CHECK WHILE PERFORMING OTHER MAINTENANCE, FOUND RT SLOPING LONGERON DOUBLER CRACKED AT BS 834, RBL 62, WL 174. REPAIR BY REPLACEMENT ACCOMPLISHED IAW LOCKHEED SMP583 SRM 51-60 & 51-70.

Part: TRACK — CHAFED (ZONE 700) · airframe 18,079 hrs · 10,915 cycles

DURING SCHEDULED B-2 CHECK WHILE PERFORMING OTHER MAINTENANCE, FOUND RH FS577 MLG TRACK WITH EXCESSIVE WEAR AT RBL61. REPAIR BY REPLACEMENT ACCOMPLISHED IAW LOCKHEED SMP583 SRM, CH. 51-60 & 51-70. NR# 1001390879.

Part: TRACK — CORRODED (ZONE 700) · airframe 18,079 hrs · 10,915 cycles

DURING SCHEDULED B-2 CHECK WHILE PERFORMING OTHER MAINTENANCE, FOUND RH FS588 MLG TRACK WITH EXCESSIVE WEAR AT RBL61. / REPAIR BY REPLACEMENT ACCOMPLISHED IAW LOCKHEED SMP583 SRM, CH. 51-60 & 51-70. NR# 1001390879.

Part: DOUBLER — CRACKED (ZONE 100) · airframe 18,079 hrs · 10,915 cycles

DURING SCHEDULED B-2 CHECK UNDER JOB CARD HB5305, FOUND FWD FUSELAGE DOUBLER CRACKED AT FS204, LBL80, WL195. REPAIR BY REPLACEMENT ACCOMPLISHED IAW LOCKHEED SMP583 SRM, CH. 51-60 & 51-70. NR# 1001390883.

Part: SKIN — CRACKED (LT ELEVATOR) · airframe 18,079 hrs · 10,915 cycles

DURING SCHEDULED B-2 CHECK UNDER JOB CARD HB2703, FOUND LH ELEVATOR LOWER SURFACE CRACKED AT HSS67L. / REPAIRED IAW LOCKHEED SMP583 SRM, FIGURE 51-140-12. NR# 1001391014

Part: BEAM — CORRODED (RT MLG) · corrosion level 2 · airframe 18,079 hrs · 10,915 cycles

DURING SCHEDULED B-2 CHECK WHILE PERFORMING OTHER MAINTENANCE, FOUND RH AFT MAIN LANDING GEAR BEAM CORRODED AT FS577, RBL65 WL180-195. / REPAIR BY REPLACEMENT ACCOMPLISHED IAW LOCKHEED SMP583 SRM, CH. 51-60 & 51-70. NR# 1001391017.

Part: SKIN — CORRODED (ZONE 100) · airframe 18,079 hrs · 10,915 cycles

DURING SCHEDULED B-2 CHECK UNDER JOB CARD HB5701, FOUND LT CENTER WING LOWER TRAILING EDGE SKIN CORRODED AT CWS178-220L. REPAIRED IAW LAC MEA 382-55-26-090. NR# 1001392002.

Part: DRAG ANGLE — CRACKED (ZONE 100) · airframe 18,079 hrs · 10,915 cycles

DURING SCHEDULED B-2 CHECK UNDER SB 382-53-61, FOUND LH FUSELAGE TO WING DRAG ANGLE CRACKED AT FS477-617, LBL61, WL146. / REPAIR BY REPLACEMENT ACCOMPLISHED IAW LOCKHEED SMP583 SRM, CH. 51-60 & 51-70. NR# 1001392944.

Part: BEAM — CORRODED (ZONE 100) · airframe 18,079 hrs · 10,915 cycles

DURING SCHEDULED B-2 CHECK WHILE PERFORMING OTHER MAINTENANCE, FOUND LH UPPER BOW BEAM ATTACH FITTING CRACKED AT FS497, LBL69, WL255. REPAIR BY REPLACEMENT ACCOMPLISHED IAW LOCKHEED SMP583 SRM, CH. 51-60 & 51-70.

Part: STRAP — DAMAGED (ZONE 100) · airframe 18,079 hrs · 10,915 cycles

DURING SCHEDULED B-2 CHECK WHILE PERFORMING OTHER MAINTENANCE, FOUND STRAP ATTACHED TO HORIZONTAL LEG OF THE DRAG ANGLE WITH PREVIOUS BLEND REPAIR AT FS577 AND 617, LBL60, WL255. / REPAIR BY REPLACEMENT ACCOMPLISHED IAW LOCKHEED SMP583 SRM, CH. 51-60 & 51-70. NR# 1001399728.

Part: SKIN — DEBONDED (ZONE 300) · airframe 18,079 hrs · 10,915 cycles

DURING SCHEDULED B-2 CHECK ON JOB CARD HB2703, FOUND RUDDER RH AFT TRAILING EDGE SKIN DISBONDED AT FS1160-1171, VSS75-143. / REPAIRED IAW LOCKHEED SMP583 SRM, FIGURE 51-140-24. NR# 1001392678

Part: RISER PANEL — CRACKED (ZONE 100) · airframe 43,251 hrs · 26,493 cycles

DURING SCHEDULED C-3 CHECK UNDER JOB CARD HC5323, FOUND LT MLG WHEEL WELL UPPER BULKHEAD RAISER PANEL CRACKED AT BS 487, LBL 61, WL 216. REPAIR BY REPLACEMENT ACCOMPLISHED IAW SMP583 SRM, CH. 51-60 & 51-70.

Part: LUG — CRACKED (ZONE 100) · airframe 43,251 hrs · 26,493 cycles

DURING SCHEDULED C-3 CHECK UNDER JOB CARD HC5323, FOUND LT MLG UPPER BULKHEAD BOW BEAM LOWER LUG CRACKED AT FS 537, LBL 62, WL 201. REPAIRED IAW SMP583 SRM, FIGURE 53-40-14.

Part: SKIN — CRACKED (ZONE 600 FLAP) · airframe 43,251 hrs · 26,493 cycles

DURING SCHEDULED C-3 CHECK UNDER JOB CARD HC5712, FOUND RT INBOARD FLAP UPPER SKIN TRAILING EDGE CRACKED AT CWS150R. REPAIRED IAW SMP583 SRM, FIGURE 51-140-12.

Part: SKIN — CRACKED (ZONE 600 FLAP) · airframe 43,251 hrs · 26,493 cycles

DURING SCHEDULED C-3 CHECK UNDER JOB CARD HC5712, FOUND RT INBOARD FLAP UPPER CENTER SKIN CRACKED AT CWS121R. REPAIRED IAW SMP583 SRM, FIGURE 51-140-12.

Part: PLATE — CHAFED (ZONE 100) · airframe 43,251 hrs · 26,493 cycles

DURING SCHEDULED C-3 CHECK UNDER JOB CARD HC5211, FOUND CARGO FLOOR RAMP END PLATE CHAFED AT BS 817.0E, LBL 48 TO RBL 36, WL 145. REPAIR BY REPLACEMENT ACCOMPLISHED IAW SRM 51-60 & 51-70.

Part: FITTING — CRACKED (ZOEN 100) · airframe 43,251 hrs · 26,493 cycles

DURING SCHEDULED C-3 CHECK UNDER JOB CARD HC5313, FOUND RH CARGO FLOOR END FITTING UNDER CHINE CAP CRACKED AT FS 797.0E, RBL 61, WL 140. REPAIR BY REPLACEMENT ACCOMPLISHED IAW SRM 51-60 & 51-70.

Part: SKIN — CORRODED (ZONE 500 AILERON) · corrosion level 2 · airframe 43,251 hrs · 26,493 cycles

DURING SCHEDULED C-3 CHECK UNDER JOB CARD HC5711, FOUND LT AILERON LOWER FORWARD SKIN CORRODED AT AS55.4L TO AS143.6L. REPAIR BY REPLACEMENT ACCOMPLISHED IAW SRM 51-60 & 51-70.

Part: FITTING — CRACKED (ZONE) · airframe 43,251 hrs · 26,493 cycles

DURING SCHEDULED C-3 CHECK UNDER JOB CARD HC5313, FOUND LT CARGO FLOOR END FITTING UNDER CHINE CAP CRACKED AT FS 717, LBL 61, WL 140. REPAIR BY REPLACEMENT ACCOMPLISHED IAW SRM 51-60 & 51-70.

Part: FITTING — CRACKED (ZONE 100) · airframe 43,251 hrs · 26,493 cycles

DURING SCHEDULED C-3 CHECK UNDER JOB CARD HC5313, FOUND RT CARGO FLOOR END FITTING UNDER CHINE CAP CRACKED AT FS 717, RBL 61, WL 140. REPAIR BY REPLACEMENT ACCOMPLISHED IAW SRM 51-60 & 51-70.

Part: FITTING — CRACKED (ZONE 100) · airframe 43,251 hrs · 26,493 cycles

DURING SCHEDULED C-3 CHECK UNDER JOB CARD HC5315, FOUND FS 814 LT LOWER ATTACHMENT TEE FITTING CRACKED AT LBL 62, WL 170. REPAIR BY REPLACEMENT ACCOMPLISHED IAW SRM 51-60 & 51-70.

Part: BULKHEAD WEB — CRACKED (ZONE 100) · airframe 43,251 hrs · 26,493 cycles

DURING SCHEDULED C-3 CHECK UNDER JOB CARD HC5315, FOUND BS 880 LT BULKHEAD LOWER LIGHTENING HOLE CRACKED AT LBL61, WL190. REPAIR BY REPLACEMENT ACCOMPLISHED IAW SRM 51-60 & 51-70.

Part: BULKHEAD WEB — CRACKED (ZONE 200) · airframe 43,251 hrs · 26,493 cycles

DURING SCHEDULED C-3 CHECK UNDER JOB CARD HC5315, FOUND BS 946 RT UPPER BULKHEAD WEB CRACKED AT RBL 19, WL 278. REPAIRED IAW SRM 51-140-17.

Part: FITTING — CORRODED (ZONE 300) · corrosion level 2 · airframe 43,251 hrs · 26,493 cycles

DURING SCHEDULED C-3 CHECK UNDER JOB CARD HC5511, FOUND HORIZONTAL STAB INTERIOR FITTING CORRODED AT FS 1047, LBL 6, WL 278. REPAIR BY REPLACEMENT ACCOMPLISHED IAW SRM 51-60 & 51-70.

Part: SKIN — CORRODED (ZONE 300) · corrosion level 2 · airframe 43,251 hrs · 26,493 cycles

DURING SCHEDULED C-3 CHECK UNDER JOB CARD HC5511, FOUND HORIZONTAL STAB LOWER SKIN PANEL INTERIOR MATTING SURFACE TO THE BULKHEAD CAP CORRODED AT FS 1066, RBL 30 TO RBL 33. REPAIR BY REPLACEMENT ACCOMPLISHED IAW SRM 51-60 & 51-70.

Part: SKIN — CRACKED (ZONE 300) · airframe 43,251 hrs · 26,493 cycles

DURING SCHEDULED C-3 CHECK UNDER JOB CARD HC5511, FOUND HORIZONTAL UPPER SKIN PANEL CRACKED AT FS 1063 HSS 59L, WL 284. REPAIRED IAW LAC MEA 382-55-25-043.

Part: SKIN — CRACKED (ZONE 300) · airframe 43,251 hrs · 26,493 cycles

DURING SCHEDULED C-3 CHECK UNDER JOB CARD HC5511, FOUND HORIZONTAL STAB UPPER SKIN PANEL CRACKED IN 3 AREAS AT FS 1041-FS 1063, HSS 59R, WL 284. REPAIRED IAW LAC MEA 382-55-25-044.

Part: FASTENER — LOOSE (ZONE 300) · airframe 43,251 hrs · 26,493 cycles

DURING SCHEDULED C-3 CHECK UNDER JOB CARD HC551, FOUND HORIZONTAL STAB UPPER SKIN PATCH WITH SMOKING RIVETS AT FS 1097, HSS 161L WL 282. REPAIRED IAW SRM 55-20-01.

Part: BEAM — CRACKED (ZONE 100) · airframe 43,251 hrs · 26,493 cycles

DURING SCHEDULED C-3 CHECK UNDER JOB CARD HC5324, FOUND RT UPPER WHEEL WELL BEAM ASSY WEB CRACKED AT FS 532, RBL 61, WL 237. REPAIR BY REPLACEMENT ACCOMPLISHED IAW SRM 51-60 & 51-70.

Part: BEAM — CRACKED (ZONE 100) · airframe 43,251 hrs · 26,493 cycles

DURING SCHEDULED C-3 CHECK UNDER JOB CARD HC5324, FOUND RT MLG UPPER WHEEL WELL BEAM ASSY WEB CRACKED AT FS 523, RBL 61, WL 237. REPAIR BY REPLACEMENT ACCOMPLISHED IAW SRM 51-60 & 51-70.

Part: FRAME — MISREPAIRED (ZONE 200) · airframe 43,251 hrs · 26,493 cycles

DURING SCHEDULED C-3 CHECK WHILE PERFORMING OTHER MAINTENANCE, FOUND FS 777.0E RING SEGMENT WITH INCORRECT REPAIR AT RBL 70, WL 246. REPAIRED IAW SRM 53-40-11.

Part: RIB — CRACKED (ZONE 500 FLAP) · airframe 43,251 hrs · 26,493 cycles

DURING SCHEDULED C-3 CHECK WHILE PERFORMING OTHER MAINTENANCE, FOUND LT OUTBOARD FLAP RIB CRACKED AT OWFS336L. REPAIR BY REPLACEMENT ACCOMPLISHED IAW SRM 51-60 & 51-70.

Part: FITTING — CORRODED (ZONE 300) · corrosion level 2 · airframe 43,251 hrs · 26,493 cycles

DURING SCHEDULED C-3 CHECK UNDER JOB CARD HC5511, FOUND HORIZONTAL STAB INTERIOR FITTING CORRODED AT FS 1049, LBL 13, WL 278. REPAIR BY REPLACEMENT ACCOMPLISHED IAW SRM 51-60 & 51-70.

Part: FORMER — CRACKED (ZONE 200) · airframe 43,251 hrs · 26,493 cycles

DURING SCHEDULED C-3 CHECK UNDER JOB CARD HC5315, FOUND FS 922 OVERHEAD FORMER CRACKED AT LBL 13 SCREW HOLE AND LBL17 FLANGE. REPAIR BY REPLACEMENT ACCOMPLISHED IAW SRM 51-60 & 51-70.

Part: SKIN — CHAFED (ZONE 500 FLAP) · airframe 43,251 hrs · 26,493 cycles

DURING SCHEDULED C-3 CHECK UNDER JOB CARD HC5711, FOUND LT INBD FLAP LEADING EDGE SKIN CHAFED AT CWS82L. REPAIRED IAW LOCKHEED SRM 51-140-12.

Part: SKIN — CHAFED (ZONE 600 FLAP) · airframe 43,251 hrs · 26,493 cycles

DURING SCHEDULED C-3 CHECK UNDER JOB CARD HC5712, FOUND LT INBOARD FLAP LEADING EDGE SKIN CHAFED AT CWS82R. REPAIRED IAW LOCKHEED SRM 51-140-12.

Part: FLANGE — CRACKED (CARGO RAMP) · airframe 43,251 hrs · 26,493 cycles

DURING SCHEDULED C-3 CHECK UNDER JOB CARD HC5211, FOUND CARGO RAMP BULKHEAD FORWARD SUPPORT FLANGE CRACKED AT RS0, LBL 44-48, WL 141. / REPAIRED IAW SRM 51-140-19.

Part: SUPPORT ANGLE — CRACKED (ZONE 100) · airframe 43,251 hrs · 26,493 cycles

DURING SCHEDULED C-3 CHECK UNDER JOB CARD HC3211, FOUND MLG WHEEL WELL UPPER WL 200 SUPPORT CLIP CRACKED AT FS 517, LBL 85. REPAIR BY REPLACEMENT ACCOMPLISHED IAW SRM 51-60 & 51-70.

Part: SPAR CAP — CORRODED (ZONE 300) · corrosion level 2 · airframe 43,251 hrs · 26,493 cycles

DURING SCHEDULED C-3 CHECK UNDER JOB CARD HC5511, FOUND HORIZONTAL STAB FRONT SPAR UPPER CAP CORRODED AT FS 1041, HSS 62-64R, WL 283. REPAIRED IAW MEA 382-55-25-064.

Part: FITTING — CRACKED (WING TIP) · airframe 43,251 hrs · 26,493 cycles

DURING SCHEDULED C-3 CHECK UNDER JOB CARD HC5711, FOUND LT OUTER WING TIP COVER ATTACHMENT FITTING CRACKED AT OWS 563L. REPAIR BY REPLACEMENT ACCOMPLISHED IAW SRM 51-60 & 51-70.

Part: ANGLE — CORRODED (ZONE 300) · corrosion level 2 · airframe 43,251 hrs · 26,493 cycles

DURING SCHEDULED C-3 CHECK UNDER JOB CARD HC 5511, FOUND HORIZONTAL STAB LT VERTICAL ANGLE CORRODED AT FS 1077, HSS 238L, WL 285. REPAIR BY REPLACEMENT ACCOMPLISHED IAW SRM 51-60 & 51-70.

Part: SKIN — CORRODED (ZONE 300) · corrosion level 2 · airframe 43,251 hrs · 26,493 cycles

DURING SCHEDULED C-3 CHECK UNDER JOB CARD HC5511, FOUND VERTICAL STAB RH AFT SKIN CORRODED AT FS 1115, VSS 30, RBL 11. REPAIRED IAW LOCKHEED SRM 51-140-12.

Part: BULKHEAD WEB — CRACKED · airframe 43,251 hrs · 26,493 cycles

DURING ULTRASONIC SPECIAL NDI INSP IAW SERVICE FLO CS1370999, FOUND FS 93 CANTED. BULKHEAD CRACKING IN THE WEB. DOCUMENTED ON NDT RPT PLA-066-2025. REPAIR BY REPLACEMENT ACCOMPLISHED IAW SRM 51-60 & 51-70.

Part: TRIM TAB — CRACKED (ZONE 600 AILERON) · airframe 43,251 hrs · 26,493 cycles

DURING SCHEDULED C-3 CHECK UNDER JOB CARD HC5712, FOUND RT AILERON TRIM TAB TRAILING EDGE CRACKED AT AS62R AND AS66R. REPAIRED IAW SRM 51-140-12.

Part: BRACKET — CRACKED (ZONE 100) · airframe 43,251 hrs · 26,493 cycles

DURING SCHEDULED C-3 CHECK UNDER JOB CARD HC3211, FOUND LT MLG WHEEL WELL FS 491 UPPER SUPPORT BRACKET CRACKED AT LBL 61, WL 200. REPAIR BY REPLACEMENT ACCOMPLISHED IAW SRM 51-60 & 51-70.

Part: FAIRING — CRACKED (ZONE 100) · airframe 43,251 hrs · 26,493 cycles

DURING SCHEDULED C-3 CHECK WHILE PERFORMING OTHER MAINTENANCE, FOUND RADOME FAIRING CRACKED AT RIVET EDGE AT FS 80, LBL 12, WL 200 . REPAIRED IAW SRM 51-140-11.

Part: SKIN — DENTED (ZONE 300 ELEV) · airframe 43,251 hrs · 26,493 cycles

DURING SCHEDULED C-3 CHECK UNDER JOB CARD HC5511, FOUND LT ELEVATOR UPPER SKIN DENTED AT HSS 180-238L. REPAIR BY REPLACEMENT ACCOMPLISHED IAW SRM 51-60 & 51-70.

Part: SKIN — DENTED (ZONE 300) · airframe 43,251 hrs · 26,493 cycles

DURING SCHEDULED C-3 CHECK UNDER JOB CARD HC5511, FOUND LT ELEVATOR UPPER SKIN DENTED AT HSS 238-296L. REPAIR BY REPLACEMENT ACCOMPLISHED IAW SRM 51-60 & 51-70.

Part: FORMER — CRACKED (ZONE 300) · airframe 43,251 hrs · 26,493 cycles

DURING SCHEDULED C-3 CHECK WHILE PERFORMING OTHER MAINTENANCE, FOUND HORIZONTAL STAB LT LEADING EDGE LOWER FORMER CRACKED AT HSS 168L. REPAIRED IAW SRM 51-140-20.