N521DA
Registered owner: UMANAH AVIATION LLC, MD (owner ≠ operator)
Operators of this aircraft
Who operated this tail, and how firmly we know it.
No operator established for this aircraft.
Accident & incident history
Maintenance disclosures
Service Difficulty Reports filed with the FAA for this airframe. Filing is largely voluntary — the number of reports is not a measure of reliability. To verify a report, search its control number at the FAA SDRS site.
48 reports on file, 1995-01-02 – 2002-12-13.
Part: SKIN — CRACKED (S-4R, FS 681-740) · airframe 67,418 hrs · 52,361 cycles
FUSELAGE / SKIN / FS 681-740 / STRG. 4R / SKIN LAP JOINT : CRACK REPAIR LFEC INSPECTION OF THE STRINGER 4R SKIN LAP JOINT BETWEEN FS 681 & 740 GAVE CRACK INDICATIONS. INTERNAL MFEC INSPECTIONS CONFIRMED 8 CRACK LOCATIONS ALONG THE LOWER ROW OF FASTENERS IN THE LOWER SKIN PANEL. THE ENTIRE LAP JOINT WAS CUTOUT AN REPAIRED WITH AN EXTERNAL ALUMINUM DOUBLER PER ER/A 384201-14AD, REV A.
Part: SKIN — CRACKED (S-4R, FS 481-681) · airframe 67,418 hrs · 52,361 cycles
FUSELAGE / SKIN / FS 481-681 / STRG. 4R / SKIN LAP JOINT : CRACK REPAIR LFEC INSPECTION OF THE STRINGER 4R LAP JOINT REVEALED CRACK INDICATIONS BETWEEN FS 481 & 681. INTERNAL MFEC INSPECTION CONFIRMED A TOTAL OF 14 CRACKS ALONG THE LOWER ROW OF FASTENERS IN THE LOWER SKIN. THE ENTIRE PANEL LAP JOINT WAS CUTOUT AND REPAIRED WITH AN EXTERNAL ALUMINUM DOUBLER PER ER/A 384192-14AD.
Part: BATTERY PACK — DISCHARGED (COCKPIT) · airframe 66,217 hrs · 51,472 cycles
COCKPIT L1 AND L2 EMERGENCY EXIT LIGHTS INOP DUE TO BATTERY FAIL. REPLACED SAME, CHECKS OK.
Part: ANGLE — CRACKED (NBR 2 SLAT) · airframe 65,332 hrs · 50,942 cycles
1/8 IN CRACK COVE SKIN ATTACH ANGLE BELOW TAI DUCT NBR 2 SLAT REPAIR PER MM 57-54-000-8
Earlier reports · 1995–2001 · 44 reports
2001
Part: ENGINE — MAKING METAL (NR 1) · airframe 64,312 hrs · 50,279 cycles
NR 1 ENG OIL FILTER BYPASS LT ILLUM. C/W POM PROCEDURE. LT DID NOT GO OUT. ENG SHUTDOWN. CA REPLACED NR 1 ENG OIL FILTER, LK CK GOOD. FOUND METAL ON MAIN OIL CHIP DET. PERFORMED ENG PENALTY RUN PER M/M. ON RE-INSP OF CHIP DET FOUND METAL AGAIN. REPLACED NR 1 ENG.
Part: DOOR FRAME — CRACKED (R1 DOOR) · airframe 63,850 hrs · 49,977 cycles
R1 DOOR AFT FRAME IS CRACKED AT LWR STOP FITTING. REPAIRED PER M/M 52-12-000-8.
Part: BATTERY PACK — DEFECTIVE (CABIN) · airframe 63,706 hrs · 49,874 cycles
LT AFT EMERGENCY LIGHT FLICKERS ON AND OFF. REPLACED BATTERY PACK.
Part: POWER SUPPLY — MALFUNCTIONED (CABIN) · airframe 63,706 hrs · 49,874 cycles
LT OVERWING EMERGENCY LIGHT STAYS ON WITH EMERGENCY LIGHT SW OFF. REPLACED POWER SUPPLY RACK.
Part: STRINGER — CRACKED (CARGO BAY) · airframe 62,852 hrs · 49,303 cycles
CRACKED STRINGER 28R O/B FLANGE JUST FWD OF STA 990. INSTALLED REPAIR AS PER DRD 53-10-11D.
Part: SKIN — DAMAGED (NR 3 FLAP) · airframe 62,852 hrs · 49,303 cycles
NR 3 MID FLAP INBOARD UPPER SKIN PANEL WAS FOUND DAMAGED. REPAIRED PER ER/A 397199-14.
2000
Part: LIGHT — INOPERATIVE (CABIN) · airframe 62,829 hrs · 49,279 cycles
IR: RI DOOR OVERHEAD EMER LIGHT INOP. CA: REPLACED LIGHT ASSY CKS GOOD.
Part: BATTERY — INOPERATIVE (CABIN) · airframe 62,420 hrs · 48,799 cycles
ON L/O, FOUND FWD RIGHT OVERWING EXIT EMERGENCY SIGN INOP. REMOVED AND REPLACED BATTERY TRAY ASSY PER M/M, OPS CKS GOOD.
Part: ENGINE — FLAMED OUT (NR 2) · airframe 62,199 hrs · 48,527 cycles
NR 2 ENGINE FLAMED OUT ON LANDING. REPLACED ENGINE.
Part: LE FLAP — SEPARATED (LT WING)
AFTER T/O FROM DCA, FLAPS DID NOT RETRACT PAST 2 DEGREE POSITION. A/C DIVERTED TO IAD. MTC IN IAD FOUND LT O/B FOREFLAP BROKEN FREE FROM I/B CARRIAGE. REPLACED FOREFLAP.
1999
Part: FRAME — CRACKED (BS 440 - 460)
THE FUSELAGE WAS BADLY DAMAGED BY GROUND EQUIPMENT RESULTING IN DENTING AND CRACKING OF THE FS 440 & FS 460 FRAMES BETWEEN STRINGERS 22R & 26R. THE DAMAGED SECTIONS OF FRAMES WERE CUT OUT AND NEW SECTIONS INSTALLED WITH NEW FORMED SHEET ALUMINUM SPLICES PER ER/A 368848-14, REV B.
Part: SKIN — DENTED (BS 416 - 484)
THE FUSELAGE SKIN WAS BADLY DAMAGED BY CONTACT WITH GROUND EQUIPMENT. THE SECTION OF SKIN BETWEEN FS 416 & FS 484 AND BELOW STRINGER 22R WAS CUTOUT. NEW SECTIONS OF SKIN WERE INSTALLED WITH AN EXTERNAL ALUMINUM SPLICE STRAP PER ER/A 368846-14AD, REV A.
Part: BATTERY PACK — DISCHARGED (CABIN)
EXT EXIT LIGHT INOP. REPLACED BATTERY PACK, EXIT LIGHT CHECKS OK.
Part: PUMP — FAILED (B HYD SYS)
UPON DEPARTURE FROM BOS, HYD SYS B LOST ALL PRESS AND QTY WENT TO 1.5 GALS, FOLLOWED POM. FOUND OUTBOARD MOTOR PUMP LEAKING. REPLACED SAME.
Part: ACM — SEIZED (RIGHT)
PASSENGER REPORTS SMOKE IN CABIN AFTER GEAR AND FLAP EXTENSION. RT PACK IND 40 DEG WHEN IN FULL COLD. FOUND RT ACM SEIZED. REPLACED RT ACM, CKS GOOD.
Part: CHORD — DAMAGED (BS 760)
INSPECTIONS PER 4-58560-12AD, FOUND 4 FASTENER HOLES WITH TOOLING DAMAGE. NO CRACK INDICATIONS WERE NOTED. REPAIRED PER ERA 333191-14AD, REV A.
Part: SKIN — CRACKED (BS 1340)
SKIN CRACKED FS 1340 VENTRAL STAB SKIN IS CRACKED RT SIDE. FABRICATED DOUBLER PER M/M 55-30-0 FIG 801. PERFORMED DYE CHECK PER PS 900-6-3 NR 1. NO CRACKS FOUND PAST FASTENER HOLE. OK TO INSTALL REPAIR. INSTALLED REPAIR PER M/M 55-30-0 PG 801.
Part: FILTER — DIRTY (NR 1 ENGINE)
OIL FILTER BYPASS LIGHT ILLUMINATED ON T/O, REDUCED PWR FOR CLIMB AND LIGHT WENT OUT. DURING CRUISE, LIGHT CAME BACK ON, PULLED THROTTLES BACK AND LIGHT WENT OUT. SHORT TIME LATER, LIGHT CAME ON WITH THROTTLES AT IDLE. CREW SHUTDOWN PER POM. REPLACED OIL FILTER RAN ENGINE.
1998
Part: ANGLE — CRACKED (BS 1263)
HORIZ TORQUE BOX ANGLE CRACKED STA 1263 BELOW FWD END OF ACTUATOR PAD. HORIZ GUSSET ANGLE CRACKED STA 1263 BELOW ACTUATOR PAD. REPLACED ANGLE AND GUSSET PER SRM 53-10-10 FIG 1-3.
Part: BUSHING — WORN (LT HORIZ STAB)
LT HORIZ STAB NR 1 HINGE ATT PT FUS ELEV, FITTING AND BUSHINGS ARE WORN. SPOTFACE I/B FACE OF O/B LUG .012 REMOVED BUSHINGS, CLEANED LUG WITHIN LIMITS PER MM 55-50-0 FIG 801. ROTOPEENED PER PS900-4 TREAT FACES AND BORES. PAINTED FACES AND BORES. TURNED BUSHNGS TO LENGTH OF LUG THICKNESS. INSTALLED BUSHINGS PER M/M 55-50-0 PG 802. OK TO ROTOPEEN, TO TREAT/PAINT, OK TO INSTL BUSHINGS.
Part: DOUBLER — CRACKED (NR 3 MIDFLAP)
AFT SPAR CHORD DOULBER CRACKED TWO PLACES 34 FROM I/B END OF NR 3 MIDFLAP. REPLACED DOULBER PER BOEING M/M 57-52-0 FIG 802. .
Part: ANGLE — CRACKED (NR 2 TE MIDFLAP)
LOWER AFT CHORD ANGLE IS CRACKED AT 19, 22, 32, 37, 54 AND 59 FORM I/B END OF FLAP. REPAIR PER M/M 57/52/0 FIG 802.
Part: FRAME — CRACKED (BS 930)
AT HMV, FOUND FS 930 LT SIDE FRAME IS CRACKED 10 INCH BELOW CABIN WINDOW. FABRICATED NEW PARTS SRM 53-10-4, PAINTED/INSTLD COMPLETED PER SAME.
Part: BUSHING — WORN (RT HORZ STAB)
BUSHINGS WORN RT HORZ STAB. NR 1 HINGE ATTACH PT FOR ELEV FITTING BUSHINGS ARE WORN. ALSO, HARDWARE IS WORN AND FITTING LUGS ARE WORN. SPOTFACED .013 ON D/B FACE OF I/B LUG AND .010 ON I/B FACE OF O/B LUG. REMOVED BUSHINGS AND CLEANED LUGS WITHIN LIMITS PER MM 55-50-0 FIG 801. ROTOPEENED PER PS 900-4-01005 TREAT AND PAINTED FACES AND BORES. TURNED BUSHINGS LENGTHEN LUGS. INSTALLED BUSHINGS PER MM 55-58-0 PG 802. REPLACED HARDWARE, OK TO ROTOPEEN. OK TO TREAT AND PAINT.
Part: ANGLE — PART (BS 303)
ANGLE CRACKED STA 303.9 FWD CABIN LBL 28. REPLACED ANGLE PER SRM 51- 00.
1997
Part: BATTERIES — DISCHARGED (CABIN)
AISLE EMERGENCY LIGHT AT ROW 25 INOP. REPLACED BATTERIES.
Part: STIFFENER — CRACKED (RT LE SPAR)
FOUND ON A1 LETTER CK, LEADING EDGE SPAR STIFFENER CRACKED 1.25 INCH AT NR 7 SLAT INBD TRACK INBD SIDE. REPAIRED PER MM 57-20-21.
Part: BEAM — CRACKED (BS 1273)
FOUND DURING LETTER CHECK, A1-AFT BEAM RUNNING INBD AND OUTBD CRACKED AT STA 1273 VENTRAL STAIR TORQUE BOX. REPAIRED PER OPN 5967AD.
Part: CHORD — CRACKED (BS 1253-1283)
FOUND DURING LETTER CHECK, A1 INBD CHORD BELOW VENTRAL STAIRS ACTUATOR CRACKED. REPAIRED PER OPN 5967AD.
Part: STRINGER — CRACKED (VERT STAB)
FOUND ON LETTER CHECK, .75 INCH CRACK IN VERTICAL STABILIZER S-9 AT FOURTH BULKHEAD ABOVE CRAWL-WAY OPENING. REPAIRED PER MM 55-30-0.
1996
Part: LIGHT — INOPERATIVE (COCKPIT)
FOUND C/P O/HEAD EMERGENCY LITE INOP. RPLCD BATTERIES AND TAG.
Part: SKIN — CORROSION (BS 1166)
FOUND CORROSION IN THE AFT LAVATORY SERVICE PANEL CUTOUT. LOCATED JUST AFT OF STA 1166. REPAIRED IN ACCORDANCE WITH FAA/DER FORM 8110-3, DER DESIGNATION SO-831, DATED AUGUST 2, 1996.
Part: TRUNNION — CORRODED (LT MLG)
FOUND CORROSION ON LEFT MLG FORWARD TRUNNION BORE AND FACE. REPAIRED PER DELTA ERA 303917-14.
Part: RIB — CRACKED (NR 3 LE SLAT)
RIB CRACKED NR 3 L/E SLAT, O/B OF ACTUATOR ATTACH BRACKET O/B RIB. FABRICATED REPAIR PER MM 57-54-0 PG 804.
Part: BRACKET — CRACKED (NR 2 LE FLAP ACT)
FOUND CRACK ON I/B ACTUATOR BRACKET FOR THE NR 2 L/E K-FLAP. REPAIRED PER M/M 57-20-21 FIG 807 AND INSTALLED PER M/M 57-20-21 PG 811.
Part: WEB — CRACKED (VERT STAB)
FOUND CRACK AT 1303 B/H STR CUTOUT LEFT SIDE INSIDE VERTICAL STABILIZER JUST ABOVE 'S' DUCT. REPAIRED PER SRM 53-10-4.
Part: BULB — CORRODED (CABIN)
ON LAYOVER, FOUND L-1 DOOR EMERGENCY LIGHT INOP. RELAMPED, CHECKS GOOD.
Part: FUEL PUMP — FAILED (NR 2 ENGINE)
ON TAKEOFF ROLL CVG AT 78 KTS, NR 2 ENGINE APPEARED TO FLAME, ALL ENGINE INST ROLLED BACK. REJECTED TAKEOFF AND RETURNED TO GATE. INSPECTED INTAKE AND EXHAUST, PULLED OIL FILTER, ALL CHECKS OK. FOUND NO FUEL FLOW TO ENGINE. REPLACED FUEL CONTROL AND FUEL PUMP.
1995
Part: ANGLE — CRACKED (NR 2 LE SLAT)
FOUND DURING E-2 LETTER CHECK, NR 2 L/E SLAT COVE SKIN ATTACH ANGLE CRACKED UNDER TAI DUCT. REPAIRED PER M/M 57-54-0.
Part: STRINGER — CRACKED (VERT STAB)
FOUND DURING E-2 LETTER CHECK, VERTICAL STAB STRINGERS CRACKED, STR 8 RIGHT STA 133.8 AND STR 9 RIGHT STA 133.8. REPAIRED PER M/M 53-30-0 PAR 3.
Part: SKIN — CRACKED (CARGO DOOR)
C-2 DOOR SKIN CRACKED IN 2 PLACES AT UPPER EDGE 15 INCHES FWD OF AFT CORNER. REPAIRED PER SRM 52-00-3, FIG 3.
Part: SKIN — DENTED (FS 1323)
DURING CV3 IN ATL, THE FUSELAGE SKIN WAS DENTED IN TWO PLACES AT FUSELAGE STATION 1323, STR 21L. IN ACCORDANCE WITH B727 SRM 53-30-3, FIGURE 3, AN EXTERNAL REPAIR DOUBLER WAS INSTALLED.
Part: BLKHD STIFFENER — CRACKED (FS 1183)
AT CV3 IN ATL, A CRACK WAS FOUND EMANATING FROM THE BOTTOM OF THE LT FLANGE ON THE FS 1183 BULKHEAD VERTICAL STIFFENER AT RBL 8. THE CRACK WAS 1 INCH LONG. REPAIRED DAMAGE PER DL ERA 302413-14AD. AUTHORIZED BY B727-53-0175 REV. 2.
Part: CENTER FRAME — CRACKED (GALLEY DOOR)
DURING SHOP INSPECTION, THE AFT CENTER FRAME ON FWD GALLEY DOOR WAS FOUND CRACKED. REPAIRED PER SRM 51-40-3.