AIRWORTHINESS DIRECTIVE

CAA-AD-007/2002

Date of issue: January 10, 2002

APPLIANCE - PASSENGER SEATS - "9 g SEATS" (ATA 05,25) - INSPECTION/REPLACEMENT

Applicability: SICMA AERO SEAT passenger seats 88xx, 89xx, 90xx, 9lxx, 92xx, 93xx, 95xx, 96xx series, equipped with backrest links P/N 90-000200-104-1 and P/N 90-000200-104-2. Passenger seats 9140, 9l66, 9173, 9174, 9184, 9l88, 9196, 91B7, 91B8, 91C0, 91C2, 91C3, 91C4, 91C5, 9301, 9501 series are not concerned by this Airworthiness Directive (AD). A detailed list of affected seat P/N is given in Annex 1, original issue of SICMA AEROSEAT Service Bulletin No 90-25-013, Revision 2.

Note: Seats identified by Amendment Z1 have been modified and therefore are not affected by this AD.

Effective date: February 21, 2002

Compliance: Required as indicated in DGAC AD 2001-613(AB).

Remarks: The compliance of this AD must be recorded in Aircraft Logbook, where applicable the requirements of this AD must be integrated into Aircraft Technical Documentation. Address inquiries concerning this AD to: Civil Aviation Authority, Airworthiness Division, Ruzyne Airport, 160 08 Prague 6, Czech Republic, tel.: 420 2 33320922, fax: 420 2 20562270.

Ing. Pavel MATOUŠEK

Director of Airworthiness Division

CAA CZ

DGAC AD No.: 2001-613(A,B)

SICMA AERO SEAT

Equipment: passenger seats

Backrest link replacement (9 g seats) (ATA 05, 25)

1. APPLICABILITY:

SICMA AERO SEAT passenger seats 88xx, 89xx, 90xx, 9lxx, 92xx, 93xx, 95xx, 96xx series, equipped with backrest links P/N 90-000200-104-1 and P/N 90-000200-104-2. Passenger seats 9140, 9l66, 9173, 9174, 9184, 9l88, 9196, 91B7, 91B8, 91C0, 91C2, 91C3, 91C4, 91C5, 9301, 9501 series are not concerned by this Airworthiness Directive (AD). A detailed list of affected seat P/N is given in Annex 1, original issue of SICMA AEROSEAT Service Bulletin No 90-25-013, Revision 2.

Note: Seats identified by Amendment Z1 have been modified and therefore are not affected by this AD.

2. REASON:

Cracks have been found on seats backrest links P/N 90-000200-104-1 and 90-000200-104-2. These cracks can significantly affect the structural integrity of seat backrests.

3. COMPLIANCE:

The following measures are rendered mandatory on the effective date of this AD, unless already accomplished

- Initial visual inspection for every applicable seats,

- Routine visual inspection must be performed for applicable seats having more than 12,000 flight hours or more than four years since new on the effective date of this AD, until the occurrence of link replacement,

- Link replacement.

3.1. Initial visual inspection

Initial visual inspection of these backrest links must be performed as per Part 1 of SICMA AERO SEAT Service Bulletin 90-25-013 Revision 2:

- before 6,000 flight hours since new or since last backrest link installation, or before two years from seat manufacturing date or from last backrest link installation date, whichever occurs later, or

- within the next 900 flight hours or before five (5) months from the effective date of this AD, whichever occurs later.

If no crack is found, replace the links as described in the paragraph 3.3 of this AD.

If a crack is found between the side of the backrest link and the lock out pin hole, but does not pass this lock out pin hole (see Figure 2, page 7/11 of SICMA AERO SEAT Service Bulletin 90-25-013 Revision 2), replace both backrest links of affected seat, before accumulation of further 600 flight hours without exceeding three (3) months after the inspection date, whichever occurs later, with new links P/N 90-100200-104-1 and 90-100200-104-2. Backrest link replacement procedure is described in the paragraph 3.3 of this AD.

If crack is passing beyond the lock out pin hole (see Figure 2, page 7/11 of SICMA AERO SEAT Service Bulletin 90-25-013 Revision 2), replace both backrest links of affected seat, before further flight with new links P/N 90-100200-104-1 and 90-100200-104-2. Backrest link replacement procedure is described in the paragraph 3.3 of this AD.

For affected seats having more than 12,000 flight hours or seat manufacturing date of more than four years old on the effective date of this AD, routine visual inspection must be performed until the occurrence of link replacement, as per paragraph 3.2. of this AD.

3.2. Routine visual inspection

For affected seats having more than 12,000 flight hours or seat manufacturing date of more than four years old on the effective date of this AD, repeat visual inspection as per Part 1 of SICMA AERO SEAT Service Bulletin 90-25-013 Revision 2:

Every 900 flight hours or every five (5) months whichever occurs later, without exceeding 3,500 flight hours (or eighteen (18) months) from the effective date of this AD, until the occurrence of link replacement with new links P/N 90-100200-104-1 and 90-100200-104-2.

If crack is passing beyond the lock out pin-hole (see Figure 2, page 7/11 of SICMA AERO SEAT Service Bulletin 90-25-013 Revision 2), replace both backrest links of affected seat, before further flight with new links P/N 90-100200-104-1 and 90-100200-104-2. Backrest link replacement procedure is described in the paragraph 33 of this AD.

3.3. Link replacement

3.3.1. Backrest links P/N 90-000200-104-1 and 90-000200-104-2 must be replaced, with new links P/N 90-100200-104-1 and 90-100200-104-2, before 12,000 flight hours since new or since last backrest link installation, or before four years from seat manufacturing date or from last backrest link installation date, or within the next 3,500 flight hours or before eighteen (18) months from the effective date of this AD, whichever occurs later.

3.3.2. From the effective date of this AD, prior to reinstallation, all applicable seats having more than 12,000 flight hours since new or since last back rest installation, or being more than four (4) years old since seat manufacturing date or since last backrest link installation date, whichever occurs later, should have their backrest links replaced with new links (P/N 90-100200-104-1 and 90-100200-104-2).

3.3.3. Replacement instructions of P/N 90-000200-104-1 and 90-000200-104-2 backrest links, with new backrest links P/N 90-100200-104-1 and 90-100200-104-2 are given in Part 2 of Service Bulletin SICMA AERO SEAT 90-25-013 Revision 2.

REF.: SICMA AERO SEAT Service Bulletin 90-25-013 Revision 2 dated October 03, 2001

(or further approved revisions).

EFFECTIVE DATE: DECEMBER 22, 2001