N527DA
Registered owner: JORY AVIATION LLC, MN (owner ≠ operator)
Operators of this aircraft
Who operated this tail, and how firmly we know it.
| Operator | Role | Period | Basis |
|---|---|---|---|
| DELTA AIR LINES, INC. (DALA) | Operator | on 1993-03-15 | Operator named in NTSB report |
Accident & incident history
Operated by DELTA AIR LINES INC. (per NTSB report)
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.
71 reports on file, 1995-03-02 – 2001-12-09.
Part: BATTERY PACK — DISCHARGED (CABIN) · airframe 65,529 hrs · 49,168 cycles
LT O/W FWD EMERGENCY LIGHT INOP. REMOVED AND REPLACED BATT PACK.
Part: LIGHT — INOPERATIVE (EXTERIOR) · airframe 65,365 hrs · 49,066 cycles
RIGHT AFT OVERWING AND LT FWD OVERWING EMERGENCY EXIT LIGHTS INOP ON EXTERIOR OF ACFT. REPLACED LAMPS, RACKS AND BATTERIES. ALL POSITIONS OPERATIONAL EXCEPT LT FORWARD POSITION. RECRIMPED SPLICE 2480 REF WDM 33-51-01. OPS CHECKS GOOD.
Part: BATTERY — DISCHARGED (AFT STAIRWAY) · airframe 64,482 hrs · 48,492 cycles
EMERGENCY ESCAPE LIGHTS ABOVE AFT STAIRWAY DID NOT COME ON WHEN TESTED. REPLACED BATTERIES IN LIGHT ASSY AND RETESTED, CHECKS NORMAL.
Part: BEAM — CRACKED (FUSELAGE) · airframe 64,204 hrs · 48,295 cycles
THE RT TORQUE BOX FOR THE AFT VENTRAL STAIRWAY OPENING WAS FOUND WITH A TYPICAL CRACK IN THE UPPER HORIZONTAL BEAM AT FS 1263. THE CRACK IS TYPICAL OF BAC S/B 727-53-0129. THE CRACKED PART WAS REMOVED AND REPLACED WITH A NEW PART PER THE REQUIREMENTS OF THE S/B AND PER ER/A 380826-14AD.
Earlier reports · 1995–2000 · 67 reports
2000
Part: SKIN — DEBONDED (RT WING SPOILER) · airframe 62,583 hrs · 47,198 cycles
FROM B-2 LTR CK N/R 63, NR 9 SPOILER PANEL UPPER SURFACE DISBONDED AT FWD I/B CORNER. REPAIRED PER SRM 57-50-6.
Part: WARNING SYSTEM — FALSE INDICATION (COCKPIT) · airframe 62,492 hrs · 47,136 cycles
DISCONTINUED T/O AFTER LEFT BOTTLE DISCHARGE LIGHT CAME ON. VERIFIED BOTH ENG FIRE EXT BOTTLE PRESSURES ALL NORMAL. LIGHT WENT OUT DURING LIGHT TEST. REPLACED LEFT ENGINE FIRE BOTTLE.
Part: LINE — DAMAGED (APU VENT) · airframe 61,582 hrs · 46,514 cycles
EXCESSIVE SMOKE ON LANDING IN CABIN. SUSPECT RT PACK, DURING APU START. REPLACED OIL TANK VENT LINE ON APU.
1999
Part: TIRE — FAILED (NR 4 MAIN GEAR)
NR 4 MAIN TIRE RECAP CAME APART. DAMAGED RT OUTBOARD GEAR DOOR FLAP ASSY AND FOD NR 3 ENG. REPLACED NR 3 ENGINE. REPLACED FLAP ASSY. REPLACED NR 4 WHEEL.
Part: FLAP TRACK — CORRODED (NR 5)
INBOARD FLAP NR 5 FLAP TRACK AD 90-07-05, AD 90-06-09, CORROSION FOUND AT MLG BEAM ATTACH PAD AND WEAR AT FWD ATTACH LUG FACES. REPAIRED PER ERA 372299-14AD.
Part: SKIN — CRACKED (RT TE FLAP)
HOLE IN COVE SKIN, 24 FROM I/B FROM I/B END OF FLAP, REPAIRED PER MM 57-52-0 FIG 809.
Part: HINGE — WORN (HORIZ STAB)
THE PIVOT HINGE ON THE REAR SPAR OF THE HORIZONTAL STABILIZER WAS WORN AT RBL 10. THIS DAMAGE WAS REPAIRED PER ER/A 367854-14 AT HMV.
Part: SKIN — CRACKED (VERTICAL STAB)
THE SKIN ON THE RIGHT SIDE OF THE VERTICAL STABILIZER WAS FOUND CRACKED BETWEEN FS 1203 AND 1211. THIS DAMAGE WAS REPAIRED PER ERA 333422-14.
Part: SKIN — CRACKED (BS 380)
THE FUSELAGE SKIN WAS DAMAGED DUE TO CONTACT WITH THE JETWAY AT FS 380 BETWEEN STRINGERS 17L AND 18L ON 9/13/93 AND A TEMPORARY REPAIR WAS INSTALLED. AT THIS HMV A PERMANENT REPAIR WAS INSTALLED PER ER/A 257628-14.
Part: SHEAR TIE — CRACKED (BS 1283)
THE FS 1283 FRAME WAS FOUND CRACKED BETWEEN STR 12L AND STR 13L. THIS DAMAGE WAS REPAIRED PER ERA 367856-14.
Part: SKIN — CRACKED (BS 1090-1110)
DURING HMV INSPECTIONS IT WAS NOTED THAT THE FUSELAGE SKIN WAS CRACKED AT STRINGER 1 BETWEEN FS 1090 AND FS 1110. THIS DAMAGED WAS REPAIRED PER ER/A 333417-14 AND APPROVED BY FAA 8110-3 FORM, DER DESIGNATION DERY-635273-NM.
Part: SKIN — GOUGED (BS 990)
THE FUSELAGE SKIN WAS GOUGED AT FS 990 BETWEEN STRINGERS 24R AND 25R DUE TO GROUND DAMAGE. THE REPAIR WAS ACCOMPLISHED BYERA 333427-14.
Part: SKIN — CRACKED (VERT STAB)
THE VERTICAL STABILIZER SKIN WAS FOUND CRACKED AT THE FRONT SPAR WHERE THE TORQUE BOX ATTACHES ON THE LEFT HAND SIDE. THE CRACK WAS FOUND AT HMV AND WAS REPAIRED PER ER/A 333420-14.
Part: RIB — DAMAGED (NR 3 LE SLAT)
LWR AFT EXTERNAL SKIN OPENED UP TO FACILITATE REPAIR OF NR 6 RIB. REPAIRED SKIN PER SRM 57-54-0 FIG 801.
Part: ANGLE — DAMAGED (PAX DOORWAY)
T ANGLE SUPPORT DAMAGED AT AFT HINGE OF DOOR 3348. REMOVED DAMAGED PORTION OF T ANGLE. BEGAN FABRICATING T ANGLE PER M/M 53-30-1 FIG 804. FABRICATED REPAIR PIECES PER M/M 53-30-1 FIG 804. INSTALLED ANGLE REPAIR PER M/M 53-30-4 FIG 804.
Part: SKIN — WORN (TE FLAP)
LWR L/E SKIN WORN ON I/B END OF FLAP. REPAIRED PER M/M 57-52-0 FIG 803.
Part: SPAR — CRACKED (RT TE FLAP)
AFT SPAR LWR CAP ANGLE, CRACKED 19 FROM INBD END. REPAIRED PER MM 57-52-0, FIG 802.
Part: FASTENERS — MISSING (NR 2 TE MID FLAP)
DURING SHOP INSPECTION, FOUND FASTENERS MISSING. THERE WAS NOT ENOUGH ROOM TO ADD FASTENERS, SO THE SPAR RAIL WAS SPLICED. ON SO 738482, N/R CARD 012493 & 012494.
Part: ANGLE — CRACKED (NR 2 TE MIDFLAP)
DURING SHOP VISIT, THE AFT LOWER SPAR/CLOSEOUT ANGLE WAS FOUND CRACKED 35 INCHES FROM THE I/B END. A REPLACEMENT SECTION OF ANGLE WAS INSTALLED ALONG WITH A DOUBLER PER MM 57-52-0, FIG 802.
Part: ANGLE — CRACKED (NR 2 TE MIDFLAP)
DURING SHOP INSPECTION THE AFT LOWER SPAR ANGLE WAS FOUND CRACKED 56 INCHES FROM I/B END OF FLAP. A SECTION OF ANGLE WAS REPLACED AND A DOUBLER INSTALLED PER MM 57-52-0, FIG 802.
Part: ANGLE — CRACKED (NR 2 TE MIDFLAP)
DURING SHOP VISIT, THE AFT LOWER SPAR/ANGLE WAS FOUND CRACKED 19 INCHES FROM THE I/B END. A REPLACEMENT SECTION OF ANGLE WAS INSTALLED AND A DOUBLER INSTALLED PER MM 57-52-0, FIG 802.
Part: SKIN — WORN (LT TE FLAP)
APPROXIMATELY 3 INCH LONG WEAR AREA, LWR L/E SKIN O/B END OF FLAP. REPAIRED PER M/M 57-52-0 FIG 803.
Part: SKIN — WORN (LT TE FLAP)
LWR L/E SKIN WORN I/B END OF FLAP. REPAIRED OER MM 57-52-0 FIG 803.
Part: SPAR — DAMAGED (NR 2 TE MIDFLAP)
NR 2 MIDFLAP/ UPPER SPAR CHORD / WBL 124.2: ALT FASTENER INSTALLED --- AD 94-07-08. DURING PREVENTATIVE MODIFICATION OF THE UPPER SPAR CHORD PER EO 4-58705-3AD, MTC WAS UNABLE TO INSTALL THE REQUIRED UPPER SPAR CHORD FASTENER COLLAR DUE TO PROXIMITY OF THE FASTENER HOLE TO THE SPAR RADIUS. AUTHORIZED USE OF RADIUS BLOCK PLUS MINI-NUT.
Part: SKIN — WORN (NR 4 TE MIDFLAP)
DURING SHOP VISIT, THE LEADING EDGE SKIN WAS FOUND WORN AT THE I/B END OF THE FLAP. THE SKIN WAS REPAIRED BY REMOVING THE DAMAGE AND INSTALLING A DOUBLER AND FILLER PER 727 MM 57-52-0, FOG 803.
Part: BRACKET — CRACKED (NR 8 LE SLAT ACT)
NR 8 SLAT ACTUATOR I/B ATTACH BRACKET IS CRACKED. REPAIRED PER M/M 57-20-21 PG 812.
Part: SKIN — CRACKED (BS 481-681)
LFEC INSPECTION OF THE STRINGER 4R SKIN LAP SPLICE BETWEEN FS 481 AND 681 INDICATED CRACKS IN THE LOWER FASTENER ROW OF THE LOWER SKIN. INTERNAL HFEC INSPECTION CONFIRMED 57 CRACKS ALONG THE PANEL LENGTH. THE ENTIRE SKIN LAP SPLICE WAS CUTOUT AND REPAIRED WITH AN EXTERNAL ALUMINUM DOUBLER PER ER/A 367207-14AD.
Part: SKIN — CRACKED (BS 680-740)
LFEC INSPECTION OF THE STRINGER 4R SKIN LAP SPLICE BETWEEN FS 680 AND 740 INDICATED CRACKS IN THE LOWER FASTENER ROW OF THE LOWER SKIN. INTERNAL HFEC INSPECTION CONFIRMED 40 CRACKS ALONG THE LENGTH OF THE PANEL. THE ENTIRE SKIN LAP SPLICE WAS CUTOUT AND REPAIRED WITH AN EXTENRAL ALUMINUM DOUBLER PER ER/A 367208-14AD.
1998
Part: MEGAPHONE — INOP (CABIN)
MEGAPHONE INOP. REPLACED MEGAPHONE.
Part: SUPPORT — CORRODED (LT MLG)
WING LT MLG SUPPORT BEAM, OUTBD LUG AND LOWER SURFACE, REPAIR FOR O/S HOLE BORES. THE OUTBD LUG BORE ON THE LT MLG SUPPORT BEAM WAS OVERSIZED AND SPOT FACED TO REMOVE CORROSION. SEVERAL OF THE LOWER SURFACE PANEL ATTACH HOLES WERE ALSO OVERSIZED TO REMOVE CORROSION. THE OVERSIZE REPAIR BUSHING WAS INSTALLED IN THE OVERSIZED LUG LOCATIONS AND REPAIR BUSHINGS OR OVERSIZE FASTENERS WERE INSTALLED IN THE LOWER SURFACE PANEL HOLES. THE REPAIRS WERE ACCOMPLISHED PER ER/A 365915-14.
Part: FITTING — CORRODED (WS 304)
THE REAR SPAR ATTACHMENT LUG OF THE LT MLG SUPPORT BEAM ATTACH FITTING WAS FOUND WITH CORROSION IN THE LUG HOLE BORE. THE HOLE WAS OVERSIZED TO 1.882 DIA TO REMOVE THE CORROSION AND AN OVERSIZE BUSHING WAS INSTALLED. THE REPAIR WAS ACCOMPLISHED PER ER/A 365909-14.
Part: STRINGER — CRACKED (VERT STAB)
STRINGER 8R WAS FOUND WITH A CRACK THROUGH THE INBD FLANGE AT A RIB ATTACH POINT WHICH PROGRESSED TO THE CENTER OF THE STRINGER WEB. THE CRACK WAS REPAIRED WITH TWO ALUMINUM ANGLES PER ER/A 365679-14, REV A.
Part: STRAP — OUT OF POSITION (L-2 DOOR)
YELLOW BARRIER STRAP CAUGHT HALF WAY OUT L2 DOOR, UNABLE TO RETRACT IN FLIGHT. AIR TURNBACK. REMOVED YELLOW SAFETY STRAP FROM DOOR JAMB.
Part: SUPPORT BEAM — CHAFFED (LT MLG)
FOUND DURING F-1 LETTER CHECK, MLG SIDE BRACE NUT CHAFING MLG SUPPORT BEAM. REPAIRED PER M/M 57-43-0.
1997
Part: ACTUATOR — LEAKING (NR 3 LE FLAP)
SYSTEM A-HYD FAILURE IN FLT. BOTH A-SYSTEM LOW PRESS LIGHTS CAME ON SIMULTANIOUSLY, FLICKERED THEN STAY ON. REPLACED NR 3 KRUEGER FLAP ACTUATOR FOR LEAKS, SYSTEM OPS CHECKS NORMAL.
Part: SPAR — BENT (NR 2 TE MID FLAP)
AFT SPAR RAIL BENT FROM I/B END TO 46 O/B. REPAIRED ON N/R CARD NR 02346.
Part: SPAR — CRACKED (NR 2 TE MID FLAP)
CRACKED AFT SPAR RAIL 54 FROM I/B END OF FLAP. REPAIRED ON N/R CARD 02358.
Part: BATTERY PACK — DISCHARGED (CABIN)
EMER EXIT LIGHT AFT OF F/C BULKHEAD INOP. REPLACED BATT PACK.
Part: STRINGER — CRACKED (BS 950)
THE FUSELAGE STR 29R WAS FOUND WITH A CRACK AND CORROSION NEAR STA 950E. THE DAMAGED SECTION OF THE STRINGER HAS BEEN CUT OUT AND REMOVED BETWEEN STA 950D+10 AND 950E+10. A NEW SECTION WAS SPLICED IN AND APPROVED PER FAA/DER FORM 8110-3, DER DESIGNATION SO-867, DTD 7-11-97.
Part: SKIN — DAMAGED (LT AILERON)
RIVETS PULLING THROUGH SKIN SEVERAL AREAS. SPLICED SKIN PER SRM 57-50-5, FIG 3.
Part: FLANGE — CRACKED (BS 1010)
STA 1010 FRAME UPPER FLANGE, CRACK ABOVE STG 25R. REMOVED DAMAGE PER SRM 53-10-4 FIG 27, FABRICATED REPAIR DOUBLER PER SRM 53-10-4 FIG 27. REPAIRED PER SRM 53-10-4 FIG 27.
Part: FRAME — DENTED (BS 950)
FRAME DENTED AFT B/B FS 950C ABOVE STR 26R. REMOVED DAMAGE AND CHECKED FOR CRACKS PER SRM 53-10-4 PG 110, NO CRACKS FOUND. DRILLED REPAIR PER SRM 53-10-4 FIG 27. TREATED AND PAINTED DOUBLER AND AREA PER PS 900-3-6. OK TO INSTALL. INSTALLED DOUBLER PER SRM 53-10-4.
Part: FRAME — DENTED (BS 950B)
FRAME DENTED AFT B/B FS 950 B ABOVE STR 26R. REMOVED DAMAGE PER SRM 53-10-4 FIG 27. DRILLED REPAIR DOUBLER PER SRM 53-10-4 FIG 27. TREATED AND PAINTED FRAME AND DOUBLER PER PS 900-3-6. OK TO INSTALL. INSTALLED DOUBLER PER SRM 53-10-4 FIG 27.
Part: FRAME — DENTED (BS 950)
FRAME DENTED AFT B/B FS 950C FRAME ABOVE STR 26L. REMOVED DAMAGE PER SRM 53-10-4 FIG 27, FABRICATED DOUBLER DRILL HOLES AND ALODINED AND PRIMED IAW SRM 53-10-4 FIG 27. OK TO INSTALL. INSTALLED REPAIR PER SRM 53-10-4 FIG 27.
Part: ANGLE — CRACKED (NR 5 TE SLAT ACT)
CRACK STOP DRILLED INSIDE NR 5 SLAT AT OUTBD ACTUATOR ROD END ATTACH ANGLE. FABRICATED DOUBLER PER MM 57-54-0 FIG 804. OK TO INSTALL DOUBLER. INSTALLED REPAIR PER M/M 57-54-1 FIG 804.
1996
Part: BRACKET — CRACKED (NR 2 LE SLAT ACT)
FOUND ON E1 LETTER CK, NR 2 INBD AND OUTBD SLAT ACTUATOR ATTACH BRACKETS CRACKED. REPAIRED PER MM 57-40-0.
Part: SKIN — CORROSION (BS 992)
TRANSFERRED FROM A/C LOG BOOK ITEM 013269001: RIVET SHEARED AND BULGE IN FUSELAGE SKIN AT FS 992 AT STR 28R CORROSION ITEM MARKED NR 41, TRANSFERRED FROM NR 19 TPA D-2 LTR CHK 5-2-96.
Part: INTERCOSTAL — CORROSION (BS 985)
SKIN CLIP IN AFT B/B HAS CORROSION ON LWR I/B CORNER AT STA 985 O/B OF STR 29R. REF NR 12, TASK C53-100-01.
Part: SKIN — CORROSION (BS 990)
THE FUSELAGE SKIN WAS FOUND CORRODED AT STATION 990 ALONG STRINGER 28R. MAXIMUM LENGTH OF THE CUTOUT IS 7.5 WHILE MAXIMUM WIDTH IS 4.5. THE SKIN IS FABRICATED FROM CLAD 2024-T3 WITH A THICKNESS OF 0.145.
Part: BATTERY PACK — DISCHARGED (CABIN)
LEFT SIDE SLIDE LIGHT OUT BETWEEN ESCAPE DOORS. REPLACED LEFT SIDE SLIDE LIGHT BATTERY PACK, CHECKS NORMAL.
Part: STRINGER — CRACKED (VERT STAB)
FOUND ON LETTER CHECK, RT STRINGER 10 CRACKED AT FIN STA 133 INSIDE VERTICLE STABILIZER CRAWL WAY. REPAIRED PER M/M 55-30-0, FIG 803 - ID PER PS900-5-1 NR 04.
Part: RIB — CRACKED (NR 5 LE SLAT)
TWO CRACKS IN RIB NR 11. REPAIRED PER MM 57-54-00, FIG. 804 DURING SHOP INSPECTION OF NR 5 LE SLAT.
Part: SKIN — CRACKED (NR 5 LE SLAT)
SKIN CRACKED AT OUTBOARD HOOK. REPAIRED PER SRM 57-50-3 FIG. 10 DURING SHOP INSPECTION OF NR 5 LE SLAT.
Part: WEB — CRACKED (NR 5 LE SLAT)
WEB CRACKED BETWEEN RIBS NR 6 AND NR 7. REPAIRED PER SRM 57-54-00 DURING SHOP INSPECTION OF NR 5 LE SLAT.
Part: FENCE — CRACKED (NR 5 LE SLAT)
UPON ROUTINE INSPECTION, FOUND CRACKS IN MOUNTING HOLES OF FENCE. REPAIRED AS PER SRM 57-54-0 PG 817, FOR NR 5 L/E SLAT.
1995
Part: AIR DISTR — ODOR (CABIN)
ON APPROACH, SEVEN MINUTES PRIOR TO LANDING HAD SULFUR TYPE ODOR IN CABIN. SHUTDOWN GALLEY POWER AND GASPER, FAN ODOR QUICKLY DISSIPATED. LANDED TUL, INSPECTED CABIN LIGHTS GALLEYS, RAN AND INSPECTED PACKS, COULD NOT DUPLICATE. REPLACED WATER SEPARATOR BAGS, RETURNED TO SERVICE.
Part: SKIN — CRACKED (NR 4 TE FLAP)
DURING SHOP INSPECTION, RT WING NR 4 FOREFLAP WAS FOUND WITH CRACKED SKIN AT BOTH TRACK CUTOUT PANS ON L/E. REPAIRED PER MM 57-50-4.
Part: SKIN — CORRODED (FS 950)
CORROSION WAS FOUND ON THE LOWER FUSELAGE SKIN AT STA 950D PLUS 10 BETWEEN STR 28R AND 27R. A 1.625 INCH BY 3.125 INCH CUT OUT IN THE 0.150 INCH BONDED 2024-T3 CLAD SKIN WAS REQUIRED. AN EXTERNAL REPAIR DOUBLER AND TRIPLER WILL BE INSTALLED PER DL ERA 301441-14.
Part: SKIN — CORRODED (FS 700)
AT CV2 VISIT, CORROSION WAS FOUND JUST AFT OF FS 700 BETWEEN S-28L AND S-28R. CORROSION REQUIRES A 12.5 INCH BY 3.25 INCH CUT OUT AT THIS AREA. REPAIRED SKIN PER DL ERA 301443-14AD.
Part: STRINGER — CORRODED (FS 1040-1052)
AT THE CV2 VISIT, THE SKIN ON THE LOWER O/B FUSELAGE STR 28R AT STA 1040 THROUGH STA 1052 WAS FOUND CORRODED. REPAIRED PER DL ERA 301444-14.
Part: SKIN — CORRODED (BS 580-600)
FOUND DURING CV-2 CHECK, CORROSION ON BELLY SKIN FROM STA 580 TO 600 BETWEEN STR 8R AND O/B INTERCOSTAL. REPAIRED PER SRM 53-30-3 FIG 3.
Part: DOUBLER — CRACKED (LE FLAP)
DURING SHOP INSPECTION, DOUBLER ON RIB NR 11 AND 12 WERE FOUND CRACKED INSIDE SLAT PANEL. REPAIRED PER MM 57-54-00.
Part: SEAT TRACK — CORRODED (BS 1090-1137)
FOUND DURING CV-2 CHECK, CORROSION ON LT CENTER SEAT TRACK STA 1040 TO 1137. FOUND WITHIN LIMITS FROM 1190 TO 1137 PER SRM 53-10-1. REPLACED SEAT TRACK FROM 1030 TO 1090 PER SRM 53-10-5 FIG 7.
Part: SEAT TRACK — CORRODED (BS 360-460)
FOUND DURING CV-2 CHECK, CORROSION AT GALLEY ATTACH TRACK BETWEEN STA 344 AND 460 RBL 44. REPLACED SEAT TRACK FROM STA 344 TO 360 AND STA 410 TO 460. FOUND WITHIN LIMITS FROM 360 TO 440 PER SRM 53-10-1.
Part: SLAT — CRACKED (NR 5 LE FLAP)
DURING SHOP INSPECTION, FOUND RT WING NR 5 SLAT WITH CRACKED PREVIOUSLY INSTALLED REPAIR DOUBLER. INSTALLED NEW REPAIR PER MM 57-54-0.
Part: RIB — CRACKED (NR 6 SLAT)
NOSE RIB CRACKED .25 INCH I/B SIDE NR 6 SLAT AT ACT ATTACH. CRACK WAS FOUND DURING C-2 LETTER CHECK TPAMM 3-2-95. STOPPED DRILLED PER MM 57-54-0 PG 803.
Part: CHORD — CRACKED (NR 7 SLAT)
FOUND ON C2 LTR CK, LOWER CHORD CRACKED BELOW TAI DUCT NR 7 SLAT. REPAIRED AND INSTALLED DOUBLER PER MM 57-54-0 PG 807A.